{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn07439_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Portland, Oregon | 1901 | mapsnap generated fit (2026-09-24)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-24"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"154"},{"label":"placed","value":"112"},{"label":"unplaced","value":"42"},{"label":"fit sources","value":"georef 94, georef-snap 15, georef-street 2, snap:2 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"20 sheet(s) cut into 49 panels"},{"label":"unplaced pages","value":"p0a (tier 1, 45.50281,-122.65571 +/-253m); p0b (tier 1, 45.50564,-122.67547 +/-255m); p126__1 (tier 1, 45.49526,-122.64444 +/-100m); p136__1 (tier 1, 45.50499,-122.63846 +/-125m); p137 (tier 1, 45.50820,-122.66034 +/-258m); p139 (tier 1, 45.50541,-122.65523 +/-257m); p146__2 (tier 2, 45.51266,-122.66327 +/-194m); p146__3 (tier 2, 45.51266,-122.66327 +/-194m); p146__4 (tier 1, 45.51633,-122.66622 +/-100m); p146__5 (tier 2, 45.51266,-122.66327 +/-194m); p159 (tier 4, 45.52741,-122.65833 +/-5074m); p160__1 (tier 1, 45.51614,-122.63238 +/-124m); p160__2 (tier 2, 45.51485,-122.62840 +/-224m); p166 (tier 2, 45.51470,-122.62134 +/-100m); p167__1 (tier 2, 45.50624,-122.64272 +/-100m); p167__2 (tier 1, 45.51677,-122.64285 +/-100m); p169 (tier 1, 45.50964,-122.62902 +/-258m); p170 (tier 4, 45.52741,-122.65833 +/-5074m); p171 (tier 1, 45.52092,-122.66524 +/-251m); p185__2 (tier 1, 45.52571,-122.65941 +/-165m); p188__1 (tier 1, 45.51900,-122.66171 +/-178m); p188__2 (tier 2, 45.52081,-122.66191 +/-1070m); p188__3 (tier 2, 45.52081,-122.66191 +/-1070m); p189 (tier 1, 45.52115,-122.66164 +/-179m); p190 (tier 1, 45.52329,-122.66169 +/-177m); p193__1 (tier 1, 45.52700,-122.67240 +/-244m); p193__2 (tier 1, 45.53116,-122.65834 +/-100m); p197__1 (tier 2, 45.53446,-122.67111 +/-169m); p197__2 (tier 1, 45.53613,-122.65863 +/-241m); p197__4 (tier 1, 45.53172,-122.68011 +/-100m); p203__1 (tier 1, 45.53989,-122.67868 +/-198m); p203__2 (tier 1, 45.54473,-122.68752 +/-224m); p204__1 (tier 4, 45.52741,-122.65833 +/-5074m); p204__2 (tier 4, 45.52741,-122.65833 +/-5074m); p204__3 (tier 4, 45.52741,-122.65833 +/-5074m); p218__2 (tier 1, 45.53637,-122.67128 +/-100m); p218__3 (tier 1, 45.54210,-122.67395 +/-100m); p229__2 (tier 2, 45.54692,-122.66038 +/-537m); p244__1 (tier 4, 45.52741,-122.65833 +/-5074m); p244__2 (tier 4, 45.52741,-122.65833 +/-5074m); p247__1 (tier 4, 45.52741,-122.65833 +/-5074m); p247__3 (tier 4, 45.52741,-122.65833 +/-5074m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0125/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p125","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0125/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0125","type":"ImageService3","width":1450,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2097.0 -0.0,98.9 1450.0,144.5 1450.0,2097.0 -0.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0125/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1032.0,1625.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6513595,45.4960641]}},{"type":"Feature","properties":{"resourceCoords":[103.0,828.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6538457,45.4975064]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0126__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p126 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5848.0"},{"label":"split_canvas_h","value":"8388.0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0126__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0126","type":"ImageService3","width":1462,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1462.0,0.0 1130.6,0.0 1129.2,54.2 887.8,0.0 885.4,291.8 884.7,328.9 497.8,318.9 498.8,258.2 502.4,47.4 503.1,0.0 0.0,-0.0 0.0,1605.8 495.1,1605.1 583.9,1782.2 585.7,2097.0 1462.0,2097.0 1462.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0126__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[888.0,1989.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6445906,45.4956215]}},{"type":"Feature","properties":{"resourceCoords":[888.0,-18.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6446547,45.4993559]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0127/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p127","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0127/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0127","type":"ImageService3","width":1458,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 184.7,0.0 186.5,52.1 1195.3,49.4 1194.5,0.0 1458.0,0.0 1458.0,2097.0 -0.0,2097.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0127/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[982.0,445.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6598263,45.5041482]}},{"type":"Feature","properties":{"resourceCoords":[982.0,49.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6598247,45.5048773]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0128/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p128","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0128/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0128","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1466.0,2097.0 -0.0,2097.0 -0.0,94.1 737.1,114.1 1445.5,298.7 1466.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0128/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65798481163766,45.501762073329274]}},{"type":"Feature","properties":{"resourceCoords":[1466.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65418219213062,45.5017724762039]}},{"type":"Feature","properties":{"resourceCoords":[1466.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65416111070117,45.49793306081905]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65796373020821,45.49792265794443]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0129/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p129","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0129/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0129","type":"ImageService3","width":1458,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1243.8,742.2 1245.0,1804.3 0.0,1846.2 0.0,1688.1 140.4,1129.4 153.0,385.3 0.0,386.9 0.0,153.8 1458.0,146.5 1458.0,742.0 1243.8,742.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0129/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6589767,45.5013187]}},{"type":"Feature","properties":{"resourceCoords":[1458.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6589523,45.5039449]}},{"type":"Feature","properties":{"resourceCoords":[1458.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6535632,45.503920300000004]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6535876,45.5012941]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0130/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p130","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"7"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0130/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0130","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,2097.0 -0.0,0.0 1466.0,0.0 1466.0,2097.0 0.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0130/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[669.0,1244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6336886,45.4933518]}},{"type":"Feature","properties":{"resourceCoords":[669.0,2005.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.631742,45.4933496]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0131/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p131","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0131/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0131","type":"ImageService3","width":1458,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,88.6 32.1,58.8 1270.8,39.3 1253.8,677.4 1458.0,736.5 1458.0,1815.0 1411.8,1815.3 1410.8,2097.0 676.3,2097.0 691.1,2026.6 570.4,2097.0 30.9,2097.0 0.0,1960.0 0.0,1599.4 31.0,1586.0 0.0,1586.8 0.0,88.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0131/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65436972101786,45.498845685311736]}},{"type":"Feature","properties":{"resourceCoords":[1458.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65432725838292,45.50146824594327]}},{"type":"Feature","properties":{"resourceCoords":[1458.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64898343740276,45.50142513749505]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6490259000377,45.49880257686351]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0132/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p132","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0132/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0132","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"706.5,135.0 1435.8,133.2 1441.0,648.7 1333.8,648.8 1341.4,1047.0 1443.7,1046.9 1458.4,2097.0 290.1,2097.0 339.6,1844.5 0.0,1850.1 0.0,1447.6 329.2,1444.5 315.7,921.5 0.0,929.7 0.0,0.0 49.8,0.0 58.6,136.6 578.4,146.2 717.3,64.7 706.5,135.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0132/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64937589091446,45.49875602792476]}},{"type":"Feature","properties":{"resourceCoords":[1466.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64932382016087,45.50139789516395]}},{"type":"Feature","properties":{"resourceCoords":[1466.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64397004238836,45.50134532087201]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64402211314194,45.49870345363283]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0133/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p133","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0133/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0133","type":"ImageService3","width":1458,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"30.1,1144.8 -0.0,1074.1 -0.0,40.2 217.0,40.0 216.7,0.0 1214.1,0.0 1253.0,1894.0 733.8,1895.7 677.1,2097.0 52.8,2082.3 30.1,1144.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0133/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[217.0,40.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6537255,45.5048552]}},{"type":"Feature","properties":{"resourceCoords":[1388.0,771.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.650702,45.5034888]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0134/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p134","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"18"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0134/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0134","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 1466.0,0.0 1466.0,55.6 1358.5,54.7 1337.6,2001.9 543.9,1991.0 544.4,1944.8 -0.0,1935.4 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0134/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[948.0,1200.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6486787,45.5027721]}},{"type":"Feature","properties":{"resourceCoords":[948.0,801.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6486845,45.5034884]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0135/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p135","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0135/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0135","type":"ImageService3","width":1458,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"36.5,2097.0 58.2,46.0 166.3,46.9 166.2,0.0 1458.0,0.0 1458.0,1999.6 437.4,1994.5 435.6,2097.0 36.5,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0135/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64779245293535,45.50491466190897]}},{"type":"Feature","properties":{"resourceCoords":[1458.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64407715219178,45.504928056162356]}},{"type":"Feature","properties":{"resourceCoords":[1458.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64404985819003,45.501156443520884]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6477651589336,45.5011430492675]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0136__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p136 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5864.0"},{"label":"split_canvas_h","value":"8388.0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0136__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0136","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1466.0,2097.0 1466.0,0.0 0.0,0.0 0.0,1406.7 667.5,1406.8 1011.4,1557.3 1011.5,2097.0 1466.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0136__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1082.0,453.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.639662,45.499818]}},{"type":"Feature","properties":{"resourceCoords":[290.0,53.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6416637,45.5005301]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0138/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p138","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0138/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0138","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2097.0 -0.0,164.8 92.8,167.9 214.1,0.0 923.2,0.0 1279.8,73.4 1466.0,1075.8 1466.0,1792.1 237.1,2097.0 -0.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0138/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[936.0,1250.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6606443,45.5058348]}},{"type":"Feature","properties":{"resourceCoords":[936.0,1784.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6606246,45.5048747]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0140/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p140","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0140/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0140","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1284.0,55.0 1284.2,139.3 1466.0,140.1 1466.0,1328.0 1066.8,1365.0 1059.9,2097.0 -0.0,2097.0 -0.0,55.9 1284.0,55.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0140/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1284.0,1741.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.653737,45.5041802]}},{"type":"Feature","properties":{"resourceCoords":[1284.0,55.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6537137,45.5072219]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0141/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p141","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0141/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0141","type":"ImageService3","width":1458,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1458.0,2097.0 -0.0,2097.0 0.0,-0.0 147.9,0.0 150.0,52.0 1143.2,30.6 1148.5,414.4 1321.5,415.9 1347.5,1469.0 1447.4,1703.5 1458.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0141/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[936.0,419.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6638254,45.5108311]}},{"type":"Feature","properties":{"resourceCoords":[150.0,52.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6658517,45.5115276]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0142/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p142","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0142/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0142","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"731.0,2097.0 323.4,1773.6 220.2,1627.1 187.0,1496.0 175.2,429.0 -0.0,425.1 -0.0,36.4 675.6,34.3 675.5,0.0 1357.0,35.1 1362.1,2029.9 1000.9,2014.0 1001.1,1947.5 952.4,1948.5 953.1,2097.0 731.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0142/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1358.0,1228.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6597958,45.5093731]}},{"type":"Feature","properties":{"resourceCoords":[961.0,430.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6608039,45.5108133]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0143/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p143","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0143/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0143","type":"ImageService3","width":1458,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1233.9,114.8 1225.2,2035.0 1217.0,2035.1 1216.9,2097.0 1013.3,2097.0 1012.5,2035.6 125.2,2038.0 121.2,116.8 1233.9,114.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0143/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[121.0,1235.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6598006,45.5086692]}},{"type":"Feature","properties":{"resourceCoords":[121.0,436.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6597908,45.5100943]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0144/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p144","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0144/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0144","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1280.2,2012.4 -0.0,2018.3 -0.0,35.9 1271.1,29.6 1272.1,116.1 1466.0,100.5 1466.0,2097.0 1280.7,2097.0 1280.2,2012.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0144/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[479.0,1224.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6557508,45.5086528]}},{"type":"Feature","properties":{"resourceCoords":[1273.0,426.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.653694,45.5100742]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0145/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p145","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0145/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0145","type":"ImageService3","width":1458,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 1132.0,0.0 1130.3,236.9 1458.0,237.6 1458.0,1822.2 892.0,1829.0 890.8,1776.3 741.0,1773.7 735.5,2097.0 -0.0,2097.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0145/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[892.0,1829.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6658517,45.5115276]}},{"type":"Feature","properties":{"resourceCoords":[892.0,237.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6658435,45.5143933]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0146__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p146 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5852.0"},{"label":"split_canvas_h","value":"8388.0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0146__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0146","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"973.4,1856.8 973.8,1438.3 1341.5,1439.4 1339.5,1051.3 974.2,1048.1 975.2,0.0 544.6,0.0 543.6,226.0 314.2,224.6 314.6,1152.0 493.2,1152.3 491.0,1370.1 488.3,1626.5 486.7,1775.5 314.8,1771.7 314.9,1855.6 973.4,1856.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0146__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[542.0,1029.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6638254,45.5129824]}},{"type":"Feature","properties":{"resourceCoords":[542.0,1428.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6638278,45.5122846]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0147/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p147","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0147/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0147","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"469.6,444.1 134.8,443.6 135.4,0.0 1135.7,0.0 1135.6,51.5 1227.0,51.7 1225.6,850.6 1308.3,851.0 1307.2,1229.0 1225.0,1228.8 1224.3,1626.5 1306.0,1626.6 1304.6,2097.0 130.3,2097.0 131.8,1224.1 469.3,1227.6 469.6,444.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0147/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[540.0,2019.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6587262,45.5108028]}},{"type":"Feature","properties":{"resourceCoords":[540.0,50.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6587109,45.5143709]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0148/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p148","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0148/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0148","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"81.9,1631.2 -0.0,1631.2 -0.0,1232.4 82.5,1232.4 83.0,853.5 -0.0,853.2 -0.0,-0.0 1122.5,0.0 1122.6,52.0 1266.0,52.0 1265.2,106.5 1463.0,103.1 1463.0,2097.0 1267.6,2097.0 1267.1,2025.5 81.4,2025.8 81.9,1631.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0148/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1266.0,52.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6536684,45.5143534]}},{"type":"Feature","properties":{"resourceCoords":[476.0,52.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6557062,45.5143601]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0149/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p149","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0149/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0149","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 751.1,0.0 755.0,457.6 1142.2,457.5 1133.4,1790.5 13.4,1790.8 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0149/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[896.0,845.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6658363,45.5165402]}},{"type":"Feature","properties":{"resourceCoords":[896.0,2025.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6658435,45.5143933]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0150/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p150","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0150/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0150","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"540.0,44.2 538.9,430.8 1083.8,422.5 1077.4,0.0 1134.4,0.0 1129.1,1537.8 966.7,1538.7 968.1,1798.8 549.9,1801.5 550.4,2021.0 -0.0,2022.7 -0.0,45.0 540.0,44.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0150/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[940.0,1229.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.662797,45.5158065]}},{"type":"Feature","properties":{"resourceCoords":[940.0,829.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6627878,45.5165267]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0151/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p151","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0151/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0151","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1126.2,36.5 1126.0,1972.2 115.0,1973.4 115.0,35.9 1126.2,36.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0151/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[115.0,1229.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6597491,45.5157984]}},{"type":"Feature","properties":{"resourceCoords":[115.0,1627.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6597534,45.5150848]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0152/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p152","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0152/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0152","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2025.0 -0.0,-0.0 961.4,0.0 961.4,49.4 814.4,49.2 814.2,112.2 1215.1,113.3 1216.6,1973.3 91.8,1972.8 91.8,2025.0 -0.0,2025.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0152/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[569.0,833.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6556924,45.51651]}},{"type":"Feature","properties":{"resourceCoords":[1358.0,1631.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6536702,45.5150648]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0153/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p153","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0153/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0153","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,38.7 947.6,36.5 947.5,108.1 1220.7,108.5 1211.3,2097.0 145.1,2097.0 145.9,2044.8 -0.0,2044.6 -0.0,38.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0153/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[548.0,835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6526382,45.5165]}},{"type":"Feature","properties":{"resourceCoords":[1346.0,835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6506147,45.5164951]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0154/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p154","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0154/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0154","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1826.3 -0.0,-0.0 48.8,0.0 49.7,238.4 1254.6,238.2 1257.1,1825.9 -0.0,1826.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0154/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[188.0,1431.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6607545,45.5186527]}},{"type":"Feature","properties":{"resourceCoords":[188.0,238.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6607389,45.5208009]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0155/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p155","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0155/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0155","type":"ImageService3","width":1471,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,826.8 -0.0,108.8 520.2,107.0 520.0,39.0 1136.6,37.6 1143.5,2017.4 1471.0,2016.5 1471.0,2097.0 -0.0,2097.0 -0.0,826.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0155/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[922.0,2018.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6486003,45.514341]}},{"type":"Feature","properties":{"resourceCoords":[520.0,39.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6495903,45.5179044]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0156/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p156","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0156/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0156","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"177.2,51.3 177.0,0.0 962.0,51.0 961.8,0.0 1463.0,0.0 1463.0,1238.9 1361.5,1239.2 1361.3,2031.4 1325.3,2031.4 1325.5,2097.0 566.5,2097.0 566.1,2030.7 -0.0,2030.2 -0.0,51.1 177.2,51.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0156/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[962.0,1634.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6455578,45.5150433]}},{"type":"Feature","properties":{"resourceCoords":[962.0,51.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6455389,45.51789]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0157/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p157","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"25"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0157/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0157","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1312.7,984.0 1393.0,983.5 1395.2,1222.2 1329.0,1223.2 1336.5,1981.8 1466.0,2016.3 1466.0,2097.0 0.0,2097.0 -0.0,0.0 1306.4,0.0 1312.7,984.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0157/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[994.0,835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6475879,45.5136216]}},{"type":"Feature","properties":{"resourceCoords":[205.0,1635.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6455631,45.5121813]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0158/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p158","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0158/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0158","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1078.2,38.4 1078.2,141.0 1463.0,141.9 1463.0,2097.0 0.0,2097.0 0.0,113.9 340.6,118.1 341.6,36.5 1078.2,38.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0158/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[680.0,436.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6435205,45.51504]}},{"type":"Feature","properties":{"resourceCoords":[680.0,1758.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6401639,45.5150345]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0161/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p161","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0161/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0161","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2032.5 0.0,0.0 1466.0,0.0 1466.0,2025.3 -0.0,2032.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0161/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.62799401070674,45.51938929065955]}},{"type":"Feature","properties":{"resourceCoords":[1466.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6242553909825,45.51937206502364]}},{"type":"Feature","properties":{"resourceCoords":[1466.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.62429030933559,45.51559841409493]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.62802892905984,45.51561563973084]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0162/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p162","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0162/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0162","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1184.8,5.2 1176.8,2025.5 -0.0,2026.6 -0.0,-0.0 1184.8,5.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0162/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1043.0,841.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6283659,45.5178767]}},{"type":"Feature","properties":{"resourceCoords":[1043.0,56.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6283607,45.5192979]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0163/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p163","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"21"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0163/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0163","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2097.0 0.0,0.0 11.1,48.7 1189.0,38.1 1205.6,2026.8 1334.2,2026.2 1334.7,2097.0 -0.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0163/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[582.0,1194.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6295945,45.5136066]}},{"type":"Feature","properties":{"resourceCoords":[582.0,431.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6295732,45.5150171]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0164/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p164","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0164/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0164","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2039.5 -0.0,29.7 1463.0,28.7 1463.0,805.0 1329.0,805.0 1330.0,1641.0 1463.0,1641.6 1463.0,2097.0 129.9,2097.0 129.9,2039.9 -0.0,2039.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0164/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[427.0,805.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.62685,45.5143114]}},{"type":"Feature","properties":{"resourceCoords":[1329.0,805.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6244946,45.5143077]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0165/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p165","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0165/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0165","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"85.4,1253.2 221.6,1252.6 218.4,469.1 160.4,469.4 160.5,0.0 1466.0,0.0 1466.0,2097.0 89.8,2097.0 85.4,1253.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0165/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.62469340787382,45.51658013479884]}},{"type":"Feature","properties":{"resourceCoords":[1466.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6209279716557,45.51656317208148]}},{"type":"Feature","properties":{"resourceCoords":[1466.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.62096235548145,45.51276228082609]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.62472779169957,45.51277924354345]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0168/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p168","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0168/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0168","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 1463.0,0.0 1463.0,2097.0 0.0,2097.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0168/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64529834813926,45.50608445362372]}},{"type":"Feature","properties":{"resourceCoords":[1463.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64527061951813,45.50876019907502]}},{"type":"Feature","properties":{"resourceCoords":[1463.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.63983601425889,45.508732150340386]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.63986374288002,45.50605640488909]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0172/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p172","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0172/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0172","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1341.8,0.0 1340.6,137.4 1455.8,139.0 1463.0,2097.0 922.5,2097.0 929.4,1713.7 393.9,1706.4 388.0,2097.0 -0.0,2093.8 -0.0,-0.0 1341.8,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0172/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[937.0,534.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6637971,45.520088]}},{"type":"Feature","properties":{"resourceCoords":[1335.0,534.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6627657,45.5200925]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0173/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p173","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0173/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0173","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"120.2,52.5 1295.2,53.9 1293.1,1976.3 334.5,1975.6 334.4,2024.2 -0.0,2023.7 -0.0,442.9 120.8,443.1 120.2,52.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0173/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[902.0,2025.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6556833,45.5179237]}},{"type":"Feature","properties":{"resourceCoords":[902.0,50.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6556654,45.5214957]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0174/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p174","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0174/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0174","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2033.5 148.3,2033.2 143.2,38.2 1212.5,35.5 1217.3,2027.8 404.2,2032.6 404.5,2097.0 -0.0,2097.0 -0.0,2033.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0174/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[548.0,834.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6536322,45.5200586]}},{"type":"Feature","properties":{"resourceCoords":[1346.0,2027.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6516179,45.517916]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0175/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p175","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0175/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0175","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"127.9,2097.0 127.9,2026.2 -0.0,2026.7 -0.0,114.7 1313.6,120.5 1312.3,439.6 1231.2,439.6 1233.0,2029.4 918.0,2029.0 918.0,2097.0 127.9,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0175/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[128.0,1234.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6516081,45.5193404]}},{"type":"Feature","properties":{"resourceCoords":[918.0,2029.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6495903,45.5179044]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0176/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p176","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0176/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0176","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2042.3 -0.0,444.7 81.6,444.9 83.2,126.5 1274.8,129.9 1273.9,844.5 1205.9,844.4 1204.2,1239.2 1468.0,1238.4 1468.0,1992.9 1269.8,1992.7 1270.0,2044.0 481.0,1991.8 481.3,2043.4 -0.0,2042.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0176/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[876.0,1644.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6465413,45.5186081]}},{"type":"Feature","properties":{"resourceCoords":[479.0,47.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6475406,45.5214679]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0177/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p177","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0177/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0177","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1631.3 67.5,1631.1 61.0,0.0 181.9,0.0 181.6,53.7 850.5,52.5 853.4,445.9 1466.0,444.3 1466.0,2012.0 -0.0,2022.8 -0.0,1631.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0177/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[65.0,840.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6455079,45.521463]}},{"type":"Feature","properties":{"resourceCoords":[853.0,2015.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.643503,45.5193322]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0178__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p178 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"6562.0"},{"label":"split_canvas_w","value":"2480.4"},{"label":"split_canvas_h","value":"1826.0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0178__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0178","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"11.6,1641.0 0.0,1641.0 0.0,2097.0 620.1,2097.0 611.3,1666.3 11.6,1641.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0178__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[100.0,1664.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6391348,45.5185881]}},{"type":"Feature","properties":{"resourceCoords":[468.1,1664.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6381135,45.5185859]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0178__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p178 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5872.0"},{"label":"split_canvas_h","value":"8388.0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0178__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0178","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1176.4,2038.5 1176.3,2097.0 1468.0,2097.0 1468.0,0.0 0.0,-0.0 0.0,1641.0 610.8,1640.5 618.9,2035.8 1176.4,2038.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0178__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1012.0,2036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6381135,45.5185859]}},{"type":"Feature","properties":{"resourceCoords":[545.0,56.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6392991,45.5221476]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0179/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p179","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"2"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0179/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0179","type":"ImageService3","width":1475,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"769.4,0.0 772.5,136.2 1475.0,120.4 1475.0,2012.3 1359.2,2013.8 1356.7,1875.5 7.1,1911.5 0.0,0.0 769.4,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0179/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[952.0,1632.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.663786,45.5215163]}},{"type":"Feature","properties":{"resourceCoords":[950.0,1235.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6637703,45.5222326]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0180/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p180","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"28"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0180/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0180","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2027.9 -0.0,39.4 145.3,40.0 145.5,0.0 1341.9,0.0 1340.8,444.6 1232.6,444.3 1233.2,837.7 1339.4,837.9 1337.1,2032.8 -0.0,2027.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0180/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[944.0,837.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6586799,45.5229302]}},{"type":"Feature","properties":{"resourceCoords":[1335.0,1638.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6576837,45.5214962]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0181/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p181","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"23"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0181/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0181","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"100.3,2026.2 106.0,1227.8 -0.0,1227.3 -0.0,834.7 108.0,835.2 110.8,40.0 381.7,41.4 381.9,0.0 1296.7,0.0 1292.5,840.9 1109.9,840.0 1107.6,2029.5 100.3,2026.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0181/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[894.0,1230.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6556535,45.5229242]}},{"type":"Feature","properties":{"resourceCoords":[103.0,1630.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6576773,45.5222066]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0182/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p182","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"22"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0182/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0182","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,844.6 181.5,845.1 184.1,9.7 1244.5,0.0 1229.2,2032.0 -0.0,2026.5 -0.0,844.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0182/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[972.0,1243.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6525995,45.5229019]}},{"type":"Feature","properties":{"resourceCoords":[576.0,2030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6536226,45.5214829]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0183/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p183","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0183/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0183","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1466.0,0.0 1466.0,844.8 1228.9,845.9 1232.3,2097.0 7.2,2097.0 7.0,2029.1 -0.0,2029.1 0.0,0.0 1466.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0183/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[913.0,1243.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6495528,45.5228912]}},{"type":"Feature","properties":{"resourceCoords":[521.0,1243.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6505699,45.5228977]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0184__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p184 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3202.4"},{"label":"split_canvas_w","value":"5856.0"},{"label":"split_canvas_h","value":"5185.6"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0184__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0184","type":"ImageService3","width":1464,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2094.6 73.3,2094.8 73.3,2097.0 1232.3,2097.0 1229.6,1192.6 1348.1,1193.1 1349.5,1034.1 1102.2,1030.8 1104.2,800.6 234.4,800.6 234.3,858.3 -0.0,858.8 -0.0,2094.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0184__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[458.0,1247.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6475277,45.5228872]}},{"type":"Feature","properties":{"resourceCoords":[1230.0,858.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6454941,45.5235936]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0184__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p184 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5856.0"},{"label":"split_canvas_h","value":"4142.4"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0184__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0184","type":"ImageService3","width":1464,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1464.0,0.0 -0.0,0.0 -0.0,655.8 656.5,650.0 658.7,800.6 1104.2,800.6 1102.2,1030.8 1464.0,1035.6 1464.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0184__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[654.0,260.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6434606,45.5235877]}},{"type":"Feature","properties":{"resourceCoords":[1429.0,642.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6414426,45.5228643]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0185__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p185 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5864.0"},{"label":"split_canvas_h","value":"8388.0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0185__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0185","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"16.8,30.4 -0.0,2017.9 17.2,1978.2 1198.7,1974.0 1197.9,1626.3 1466.0,1626.3 1466.0,1090.9 486.1,1090.9 489.9,20.4 16.8,30.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0185__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[806.0,2019.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6586772,45.5243488]}},{"type":"Feature","properties":{"resourceCoords":[414.0,2019.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.659691,45.5243521]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0186/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p186","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0186/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0186","type":"ImageService3","width":1464,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2018.3 -0.0,1891.0 0.0,0.0 158.9,0.0 1135.1,85.0 1464.0,859.5 1464.0,1630.7 1131.2,2021.6 -0.0,2018.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0186/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[745.0,1625.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6607922,45.5122522]}},{"type":"Feature","properties":{"resourceCoords":[745.0,471.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.660782,45.5143767]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0187/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p187","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0187/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0187","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1027.3 0.0,0.0 480.8,0.0 481.3,73.2 1187.0,67.8 1202.6,1975.2 -0.0,1983.8 -0.0,1027.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0187/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[723.0,545.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6607394,45.5172326]}},{"type":"Feature","properties":{"resourceCoords":[723.0,1977.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6607772,45.515091]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0191/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p191","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0191/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0191","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 1466.0,0.0 1466.0,2097.0 -0.0,2097.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0191/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1312.0,835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6725148,45.5267058]}},{"type":"Feature","properties":{"resourceCoords":[1312.0,1657.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6724708,45.5252758]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0192/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p192","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0192/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0192","type":"ImageService3","width":1464,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1343.3,817.6 1336.3,817.6 1317.9,2024.7 1191.6,2023.4 1191.3,2097.0 -0.0,2097.0 -0.0,148.8 1347.5,159.0 1343.3,817.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0192/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1346.0,417.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6606979,45.5272705]}},{"type":"Feature","properties":{"resourceCoords":[555.0,2023.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6627348,45.5243576]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0194/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p194","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0194/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0194","type":"ImageService3","width":1464,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"830.0,78.6 1464.0,74.9 1464.0,542.2 1346.0,539.0 1339.4,1293.1 1439.8,1869.9 1464.0,1869.9 1464.0,2097.0 -0.0,2097.0 -0.0,118.8 780.8,96.0 830.0,78.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0194/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1346.0,1331.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6647305,45.5286637]}},{"type":"Feature","properties":{"resourceCoords":[1346.0,539.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6647349,45.5300067]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0195/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p195","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0195/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0195","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"13.3,1628.1 0.0,141.6 544.7,43.0 1257.8,44.3 1255.5,155.9 1466.0,154.5 1466.0,434.8 1255.9,432.8 1269.5,2002.1 497.2,2025.6 497.2,2027.8 420.9,2027.9 421.4,2097.0 122.3,2097.0 123.0,1628.0 13.3,1628.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0195/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[499.0,1628.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6606899,45.5286329]}},{"type":"Feature","properties":{"resourceCoords":[123.0,1628.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6606943,45.5279586]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0196/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p196","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0196/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0196","type":"ImageService3","width":1464,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1464.0,184.4 1464.0,443.9 1355.0,445.0 1362.6,837.1 1464.0,835.2 1464.0,1230.8 1244.3,1234.7 1256.9,1986.6 594.8,2002.8 595.5,2037.6 159.9,2033.4 119.5,453.4 328.4,451.9 323.6,173.2 552.7,167.8 554.4,200.2 1464.0,184.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0196/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[153.0,1642.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6606795,45.5300144]}},{"type":"Feature","properties":{"resourceCoords":[1355.0,445.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6636938,45.5322283]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0197__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p197 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3443.2"},{"label":"split_canvas_w","value":"1790.0"},{"label":"split_canvas_h","value":"3397.6"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0197__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0197","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1709.6 411.5,1710.2 447.5,861.1 0.0,860.8 0.0,1709.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0197__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,860.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66141024812197,45.57325655128271]}},{"type":"Feature","properties":{"resourceCoords":[447.5,860.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6602589270882,45.57325333632673]}},{"type":"Feature","properties":{"resourceCoords":[447.5,1710.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66026765335869,45.57171954737747]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1710.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66141897439246,45.57172276233345]}},{"type":"Feature","properties":{"resourceCoords":[407.4,1673.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6603703,45.5717866]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0198/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p198","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0198/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0198","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"113.9,254.2 112.1,88.0 632.6,80.0 631.5,0.0 1187.9,0.0 946.8,306.9 950.0,625.0 807.7,626.7 1423.1,1039.9 594.1,2097.0 -0.0,2097.0 -0.0,255.8 113.9,254.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0198/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[950.0,625.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6696544,45.5344409]}},{"type":"Feature","properties":{"resourceCoords":[1352.0,71.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6697103,45.5356212]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0199/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p199","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0199/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0199","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1309.8,1369.6 1318.5,1129.1 1466.0,1131.7 1466.0,2044.7 -0.0,2097.0 -0.0,57.0 46.0,53.6 138.9,172.1 142.0,53.0 332.8,54.1 534.0,53.0 1281.6,54.2 1280.7,1369.6 1309.8,1369.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0199/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[534.0,53.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6667377,45.5343802]}},{"type":"Feature","properties":{"resourceCoords":[142.0,53.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6677432,45.5343831]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0200/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p200","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0200/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0200","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"967.5,2097.0 -0.0,2097.0 -0.0,-0.0 1463.0,0.0 1463.0,1938.8 968.0,1939.0 967.5,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0200/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1367.0,1939.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6712883,45.5347372]}},{"type":"Feature","properties":{"resourceCoords":[968.0,1939.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6720952,45.5342849]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0201/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p201","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0201/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0201","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1275.3,193.3 1444.8,1449.8 1466.0,1476.7 1466.0,2097.0 1184.0,2097.0 1203.6,2018.0 -0.0,1719.4 -0.0,273.1 516.0,269.0 579.1,349.2 959.0,192.0 1275.3,193.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0201/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[959.0,192.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6783511,45.5392444]}},{"type":"Feature","properties":{"resourceCoords":[959.0,1379.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.675922,45.537943]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0202/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p202","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0202/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0202","type":"ImageService3","width":1463,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"628.9,1624.0 626.6,2097.0 -0.0,2097.0 0.0,-0.0 1463.0,0.0 1463.0,2097.0 1343.5,2097.0 1331.5,2026.9 1013.0,2023.0 1017.6,1627.4 628.9,1624.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0202/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1013.0,2023.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6783511,45.5392444]}},{"type":"Feature","properties":{"resourceCoords":[1013.0,428.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6816125,45.5409631]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0205/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p205","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0205/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0205","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"124.0,443.6 233.0,444.3 239.8,37.6 0.0,29.1 -0.0,0.0 1311.6,0.0 1312.4,2020.5 126.8,2021.4 126.8,2097.0 0.0,2097.0 0.0,1231.9 219.9,1231.6 226.5,835.9 125.0,836.0 124.0,443.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0205/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[125.0,836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6626842,45.5322268]}},{"type":"Feature","properties":{"resourceCoords":[915.0,2018.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6596338,45.5336403]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0206/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p206","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0206/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0206","type":"ImageService3","width":1469,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1452.1,65.2 1449.7,465.5 1269.5,469.2 1265.8,854.4 1443.7,856.3 1469.0,1654.7 1258.4,1646.7 1254.2,2097.0 0.0,2097.0 0.0,47.1 1452.1,65.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0206/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1030.0,1643.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6555814,45.5336282]}},{"type":"Feature","properties":{"resourceCoords":[657.0,51.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6596391,45.5329333]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0207/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p207","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0207/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0207","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"34.1,846.2 -0.0,846.1 -0.0,198.6 36.2,198.8 37.1,325.6 1466.0,316.0 1466.0,2097.0 18.9,2097.0 -0.0,1271.9 19.6,1271.9 34.1,846.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0207/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[422.0,2024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6586064,45.5286264]}},{"type":"Feature","properties":{"resourceCoords":[422.0,78.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6586212,45.5322162]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0208/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p208","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0208/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0208","type":"ImageService3","width":1469,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"73.9,1671.3 -0.0,1671.0 -0.0,908.9 160.2,909.6 159.6,382.2 -0.0,380.9 0.0,-0.0 1469.0,0.0 1469.0,2097.0 72.7,2097.0 73.9,1671.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0208/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64863757732557,45.53816926661395]}},{"type":"Feature","properties":{"resourceCoords":[1469.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.644720697127,45.538164293752374]}},{"type":"Feature","properties":{"resourceCoords":[1469.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64473076057608,45.53422014692231]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.64864764077466,45.53422511978388]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0209/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p209","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"19"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0209/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0209","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"631.9,1957.6 631.9,2034.1 188.2,2034.3 188.4,2097.0 0.0,2097.0 -0.0,-0.0 1368.4,0.0 1368.4,61.3 1390.2,61.4 1423.0,1955.1 631.9,1957.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0209/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[631.0,1240.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6504944,45.5350312]}},{"type":"Feature","properties":{"resourceCoords":[631.0,59.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.653537,45.5350418]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0210/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p210","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0210/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0210","type":"ImageService3","width":1469,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1433.0,43.3 1433.3,0.0 1469.0,0.0 1469.0,2097.0 974.2,2097.0 974.4,1932.3 577.7,1931.9 576.2,2097.0 26.9,2097.0 0.0,38.5 1433.0,43.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0210/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[577.0,828.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.651485,45.5374531]}},{"type":"Feature","properties":{"resourceCoords":[577.0,2012.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.648433,45.5374515]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0211/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p211","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0211/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0211","type":"ImageService3","width":1466,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1365.3,0.0 1365.1,51.3 1307.7,55.4 1298.0,1971.8 0.0,1965.0 0.0,1232.7 211.2,1238.7 176.8,445.0 0.0,444.8 0.0,61.7 567.8,53.4 568.2,0.0 1365.3,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0211/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[965.0,1239.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6555618,45.5357738]}},{"type":"Feature","properties":{"resourceCoords":[1361.0,1239.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.655562,45.5364865]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0212/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p212","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0212/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0212","type":"ImageService3","width":1469,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1451.0,2028.5 0.0,2029.5 0.0,63.8 1449.8,51.8 1451.0,2028.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0212/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[601.0,1240.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6555547,45.537468]}},{"type":"Feature","properties":{"resourceCoords":[601.0,52.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6586253,45.5374785]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0213/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p213","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0213/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0213","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1229.6,54.4 1236.6,1866.8 101.2,1865.0 104.2,42.4 1229.6,54.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0213/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[507.0,837.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6646936,45.5350988]}},{"type":"Feature","properties":{"resourceCoords":[1291.0,55.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6666931,45.5365146]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0214/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p214","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0214/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0214","type":"ImageService3","width":1472,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1437.1,56.5 1437.1,2002.9 806.7,1995.0 806.6,2042.5 191.6,2040.0 0.0,2097.0 0.0,2000.1 57.5,1996.0 57.8,1862.0 0.0,1861.7 0.0,45.5 1437.1,56.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0214/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66681182715023,45.53640423709656]}},{"type":"Feature","properties":{"resourceCoords":[1472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66681106021205,45.53906442663407]}},{"type":"Feature","properties":{"resourceCoords":[1472.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6614385310865,45.53906365595174]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66143929802467,45.536403466414235]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0215/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p215","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"31"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0215/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0215","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"187.9,2017.1 -0.0,1783.0 0.0,0.0 24.7,0.0 25.7,281.1 531.2,279.3 531.0,37.6 1323.1,38.9 1305.8,2044.7 920.4,2047.2 919.2,2097.0 827.8,2047.9 88.7,2097.0 187.9,2017.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0215/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[531.0,877.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.668744,45.5365219]}},{"type":"Feature","properties":{"resourceCoords":[1317.0,877.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6666931,45.5365146]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0216/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p216","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0216/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0216","type":"ImageService3","width":1476,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,822.1 134.2,821.8 138.7,880.6 235.7,879.1 189.6,726.5 179.8,713.7 176.7,66.3 1330.7,64.0 1339.8,822.9 1288.3,822.9 1292.9,1623.1 1346.5,1623.2 1351.7,2013.3 -0.0,2019.5 -0.0,822.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0216/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[952.0,2017.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6596224,45.5343565]}},{"type":"Feature","properties":{"resourceCoords":[952.0,823.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6596054,45.536497]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0217/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p217","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0217/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0217","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,2091.3 0.0,394.3 47.0,430.7 334.2,63.1 1022.7,517.5 1423.2,0.0 1468.0,0.0 1468.0,762.4 1360.1,763.6 1342.7,1988.9 0.0,2091.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0217/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[919.0,523.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6785857,45.5401984]}},{"type":"Feature","properties":{"resourceCoords":[1350.0,1585.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6758456,45.541008]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0218__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p218 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5896.0"},{"label":"split_canvas_h","value":"8388.0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0218__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0218","type":"ImageService3","width":1474,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,815.6 484.8,815.8 492.0,1309.1 499.7,1839.2 0.0,1835.6 0.0,2097.0 1359.1,2097.0 1353.8,56.2 521.2,56.2 432.1,7.7 219.7,157.3 0.0,185.2 0.0,815.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0218__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1355.0,447.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6737889,45.5410031]}},{"type":"Feature","properties":{"resourceCoords":[579.0,447.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6737999,45.5395997]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0219/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p219","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0219/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0219","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1309.5,1857.3 510.5,1853.2 509.9,2097.0 -0.0,2097.0 -0.0,1588.1 194.7,1588.9 200.1,232.7 1302.8,238.1 1309.5,1857.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0219/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[911.0,1006.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6676935,45.5395906]}},{"type":"Feature","properties":{"resourceCoords":[1308.0,1006.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6666665,45.5395895]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0220/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p220","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0220/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0220","type":"ImageService3","width":1474,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1293.8,2011.2 215.8,2012.1 210.7,51.9 1321.6,44.6 1293.8,2011.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0220/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[752.0,1037.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6641565,45.5399612]}},{"type":"Feature","properties":{"resourceCoords":[752.0,54.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6666572,45.5399661]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0221/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p221","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0221/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0221","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"28.2,1988.1 46.1,0.0 1468.0,0.0 1468.0,1343.5 1244.0,1342.3 1240.4,1991.5 28.2,1988.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0221/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66176885940052,45.54141862084236]}},{"type":"Feature","properties":{"resourceCoords":[1468.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65804503315086,45.541417037563065]}},{"type":"Feature","properties":{"resourceCoords":[1468.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65804823949841,45.53766487976485]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66177206574808,45.53766646304414]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0222/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p222","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0222/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0222","type":"ImageService3","width":1474,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"81.0,2097.0 133.8,638.6 81.6,684.6 -0.0,683.8 0.0,0.0 1474.0,0.0 1474.0,2097.0 81.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0222/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66191581960021,45.545831493622]}},{"type":"Feature","properties":{"resourceCoords":[1474.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65808716264645,45.545858106530936]}},{"type":"Feature","properties":{"resourceCoords":[1474.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65803348335446,45.542016313909464]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66186214030822,45.54198970100053]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0223/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p223","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0223/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0223","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1294.2,1050.8 1270.5,2034.5 -0.0,2002.2 0.0,0.0 1077.4,12.7 1261.8,223.4 1286.8,323.5 1245.3,455.4 1336.8,574.2 1170.4,525.9 1020.3,648.0 1011.4,1044.5 1294.2,1050.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0223/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[802.0,1527.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6758781,45.5419272]}},{"type":"Feature","properties":{"resourceCoords":[802.0,2021.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6758456,45.541008]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0224/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p224","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0224/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0224","type":"ImageService3","width":1474,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"284.2,1037.6 -0.0,1039.2 -0.0,639.2 148.0,513.3 316.1,558.0 221.6,440.7 260.3,307.4 232.9,207.4 43.0,0.0 205.1,0.0 204.6,87.4 1088.8,92.5 1061.5,1044.7 1281.2,1040.6 1250.0,1078.7 1250.5,1489.1 1446.2,1880.1 1447.6,2026.9 282.4,2026.0 284.2,1037.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0224/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[767.0,1529.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6733219,45.5419275]}},{"type":"Feature","properties":{"resourceCoords":[767.0,2029.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6733188,45.541001]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0225/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p225","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0225/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0225","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"211.6,1538.8 190.8,1093.5 221.1,1054.3 -0.0,1064.8 -0.0,105.2 956.8,83.3 994.4,2033.1 417.2,2042.7 411.6,1895.0 211.6,1538.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0225/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[205.0,567.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6719735,45.5437316]}},{"type":"Feature","properties":{"resourceCoords":[705.0,2028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6707624,45.541021]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0226/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p226","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0226/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0226","type":"ImageService3","width":1469,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,83.1 195.4,82.3 195.6,142.7 864.7,139.8 864.1,0.0 1288.0,0.0 1288.8,47.4 1087.2,36.0 1085.5,541.4 1289.5,503.8 1260.1,1074.1 1284.9,2005.0 1080.4,2011.7 1080.3,2045.5 -0.0,2048.4 -0.0,83.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0226/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66996525700834,45.54473617851602]}},{"type":"Feature","properties":{"resourceCoords":[1469.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6661613806121,45.54471692220432]}},{"type":"Feature","properties":{"resourceCoords":[1469.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66620035366795,45.540887014456615]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6700042300642,45.54090627076831]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0227/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p227","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0227/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0227","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2004.0 -0.0,1961.2 201.8,1963.3 201.9,1929.7 174.1,1044.9 201.2,482.1 -0.0,519.9 -0.0,21.2 885.9,0.0 886.1,42.0 1154.6,48.3 1166.2,2023.9 -0.0,2004.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0227/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66714994573337,45.544695495478045]}},{"type":"Feature","properties":{"resourceCoords":[1468.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66329740790398,45.54466654152513]}},{"type":"Feature","properties":{"resourceCoords":[1468.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6633560479965,45.54078499426195]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66720858582589,45.54081394821486]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0228/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p228","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0228/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0228","type":"ImageService3","width":1474,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1474.0,1456.6 1474.0,1770.8 1226.6,1771.8 1219.3,2042.1 270.6,2044.4 270.4,54.2 -0.0,54.2 -0.0,0.0 1122.8,0.0 1123.6,52.6 1205.0,52.1 1256.4,5.5 1262.1,466.5 1246.5,466.6 1225.2,1460.2 1474.0,1456.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0228/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66482494017198,45.54468538331643]}},{"type":"Feature","properties":{"resourceCoords":[1474.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66098480104523,45.54467216555553]}},{"type":"Feature","properties":{"resourceCoords":[1474.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66101146185656,45.54081886058552]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66485160098331,45.54083207834641]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0229__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p229 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5872.0"},{"label":"split_canvas_h","value":"8388.0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0229__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0229","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1015.7,2097.0 1014.0,1595.9 1468.0,1595.6 1468.0,0.0 29.8,0.0 24.1,621.1 -0.0,621.1 -0.0,2097.0 1015.7,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0229__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[431.0,636.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6605902,45.5494966]}},{"type":"Feature","properties":{"resourceCoords":[431.0,1317.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.660593,45.5482754]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0230/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p230","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0230/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0230","type":"ImageService3","width":1474,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2097.0 0.0,0.0 1474.0,0.0 1474.0,2097.0 -0.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0230/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1184.0,1202.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6444496,45.5278986]}},{"type":"Feature","properties":{"resourceCoords":[1184.0,435.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6444407,45.5292737]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0231/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p231","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0231/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0231","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"434.0,2061.5 0.0,2097.0 -0.0,0.0 1402.3,0.0 1402.2,50.8 1364.4,51.0 1368.9,554.6 1321.0,554.6 1313.8,1063.9 1376.3,1063.8 1382.8,1482.0 1468.0,1563.0 1468.0,2097.0 1160.6,2097.0 1160.8,2051.7 434.0,2061.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0231/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6748184,45.5445964]}},{"type":"Feature","properties":{"resourceCoords":[1468.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.674805,45.5472671]}},{"type":"Feature","properties":{"resourceCoords":[1468.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6693577,45.5472537]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6693711,45.544583]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0232/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p232","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0232/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0232","type":"ImageService3","width":1474,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,528.6 49.0,528.0 37.1,10.3 456.4,2.2 458.0,65.9 1474.0,55.0 1448.0,1916.8 734.3,1922.6 737.3,2097.0 172.1,2097.0 164.7,1563.4 76.5,1481.3 63.9,1051.5 0.0,1052.4 0.0,528.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0232/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.67470107831257,45.54701253797248]}},{"type":"Feature","properties":{"resourceCoords":[1474.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.67463593401595,45.549638359918724]}},{"type":"Feature","properties":{"resourceCoords":[1474.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66933901061907,45.54957299874016]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.66940415491568,45.546947176793914]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0233__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p233 [1]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"23"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5888.0"},{"label":"split_canvas_h","value":"8388.0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0233__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0233","type":"ImageService3","width":1472,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"795.6,2097.0 795.6,1105.6 1409.3,1105.8 1199.5,56.3 -0.0,66.7 -0.0,769.9 144.5,2097.0 795.6,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0233__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1220.0,758.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6666614,45.5482617]}},{"type":"Feature","properties":{"resourceCoords":[721.0,64.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6679342,45.5495251]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0233__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p233 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"3182.4"},{"label":"split_canvas_y","value":"4422.4"},{"label":"split_canvas_w","value":"2705.6"},{"label":"split_canvas_h","value":"3965.6"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0233__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0233","type":"ImageService3","width":1472,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1472.0,2097.0 1472.0,1105.8 795.6,1105.6 830.6,2035.7 795.6,2035.6 795.6,2097.0 1472.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0233__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1381.1,1601.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6679566,45.5453593]}},{"type":"Feature","properties":{"resourceCoords":[1381.1,1204.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6679536,45.5460711]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0234/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p234","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0234/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0234","type":"ImageService3","width":1474,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"244.7,0.0 239.2,42.0 1321.0,39.5 1321.8,981.8 1382.5,981.7 1372.2,2006.5 0.0,1996.2 -0.0,-0.0 244.7,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0234/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1384.0,1237.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6636505,45.5495375]}},{"type":"Feature","properties":{"resourceCoords":[675.0,49.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6666614,45.5482617]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0235__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p235 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"6647.6"},{"label":"split_canvas_w","value":"1982.8"},{"label":"split_canvas_h","value":"1740.4"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0235__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0235","type":"ImageService3","width":1472,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"495.4,1960.3 495.4,1952.3 480.9,1662.0 0.0,1664.6 -0.0,2097.0 460.5,2097.0 495.4,1960.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0235__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1661.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.67680998163326,45.547270461803684]}},{"type":"Feature","properties":{"resourceCoords":[495.7,1661.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6755324860742,45.547277811391034]}},{"type":"Feature","properties":{"resourceCoords":[495.7,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6755232643951,45.54649108815975]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.67680075995415,45.5464837385724]}},{"type":"Feature","properties":{"resourceCoords":[64.0,1890.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6766403,45.5468582]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0235__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p235 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5888.0"},{"label":"split_canvas_h","value":"8388.0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0235__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0235","type":"ImageService3","width":1472,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1664.6 495.7,1661.9 495.2,2097.0 1472.0,2097.0 1472.0,1723.4 1339.0,1725.0 1328.5,0.0 -0.0,-0.0 0.0,1664.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0235__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1339.0,1725.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6777172,45.547828]}},{"type":"Feature","properties":{"resourceCoords":[498.0,60.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6798368,45.5508583]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0236/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p236","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0236/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0236","type":"ImageService3","width":1474,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1316.9,2097.0 967.7,2097.0 967.2,2026.5 484.5,2033.2 485.4,2097.0 260.8,2097.0 263.2,1724.6 129.4,1725.3 129.6,45.9 1378.7,54.1 1376.7,1719.0 1314.0,1719.8 1316.9,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0236/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[966.0,1722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.675569,45.5478253]}},{"type":"Feature","properties":{"resourceCoords":[966.0,45.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6755442,45.5508421]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0237/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p237","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0237/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0237","type":"ImageService3","width":1472,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"111.8,22.2 1224.7,0.0 1202.0,1379.7 1342.6,1379.5 1339.1,2021.5 115.1,2008.1 111.8,22.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0237/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[927.0,1380.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6723223,45.5507992]}},{"type":"Feature","properties":{"resourceCoords":[927.0,703.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6723103,45.5520632]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0238/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p238","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0238/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0238","type":"ImageService3","width":1474,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"150.8,2097.0 143.2,1413.0 -0.0,1415.5 0.0,0.0 1231.8,0.0 1293.8,2079.0 150.8,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0238/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[979.0,1398.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6690275,45.550787]}},{"type":"Feature","properties":{"resourceCoords":[546.0,717.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.670119,45.5520534]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0239/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p239","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"16"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0239/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0239","type":"ImageService3","width":1472,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1231.2,2036.8 1472.0,2039.4 1472.0,2097.0 577.8,2097.0 577.0,2034.2 -0.0,2033.0 -0.0,-0.0 1239.5,0.0 1231.2,2036.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0239/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[577.0,691.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6667228,45.5520528]}},{"type":"Feature","properties":{"resourceCoords":[577.0,2034.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6666987,45.549531]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0240/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p240","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0240/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0240","type":"ImageService3","width":1470,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1231.2,2051.4 -0.0,2043.1 0.0,-0.0 1470.0,0.0 1470.0,1463.0 1236.2,1462.0 1231.2,2051.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0240/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[480.0,709.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6636599,45.5520576]}},{"type":"Feature","properties":{"resourceCoords":[480.0,2042.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6636505,45.5495375]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0241/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p241","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0241/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0241","type":"ImageService3","width":1472,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"39.8,2032.3 48.1,843.4 100.8,843.6 106.5,0.0 1267.3,0.0 1267.8,46.1 1472.0,45.9 1472.0,1241.5 1384.5,1241.5 1374.7,2030.4 39.8,2032.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0241/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[715.0,1241.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6766097,45.5521055]}},{"type":"Feature","properties":{"resourceCoords":[715.0,1639.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.675536,45.5521015]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0242/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p242","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"24"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0242/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0242","type":"ImageService3","width":1468,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1468.0,0.0 1468.0,2097.0 97.3,2097.0 103.8,1629.5 190.4,1630.3 202.2,446.4 0.0,444.6 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0242/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[771.0,1636.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6765895,45.5546444]}},{"type":"Feature","properties":{"resourceCoords":[771.0,453.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6798122,45.5546338]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0243__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p243 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2020.0"},{"label":"split_canvas_w","value":"5888.0"},{"label":"split_canvas_h","value":"6368.0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0243__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0243","type":"ImageService3","width":1472,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1472.0,2097.0 1472.0,512.2 774.1,505.0 774.9,887.1 0.0,881.1 0.0,2097.0 1472.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0243__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[730.0,1463.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6604926,45.5573104]}},{"type":"Feature","properties":{"resourceCoords":[228.0,710.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6626147,45.5564029]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0243__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p243 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"17"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5888.0"},{"label":"split_canvas_h","value":"3548.4"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0243__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0243","type":"ImageService3","width":1472,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"75.2,113.2 53.9,881.5 774.9,887.1 774.1,505.0 1472.0,512.2 1472.0,111.0 75.2,113.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0243__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1248.0,260.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6749533,45.5554969]}},{"type":"Feature","properties":{"resourceCoords":[54.0,855.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6733988,45.5533283]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0245/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p245","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0245/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0245","type":"ImageService3","width":1472,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1472.0,2097.0 -0.0,2097.0 -0.0,41.5 687.8,44.2 717.5,122.3 1472.0,131.2 1472.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0245/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65843407991483,45.57186033286776]}},{"type":"Feature","properties":{"resourceCoords":[1472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65467861646005,45.57185860455916]}},{"type":"Feature","properties":{"resourceCoords":[1472.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.6546821089604,45.56808696994111]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2097.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.65843757241518,45.56808869824971]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0246/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p246","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0246/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0246","type":"ImageService3","width":1469,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 1469.0,0.0 1469.0,2097.0 0.0,2097.0 0.0,1067.1 76.8,1037.0 72.1,397.9 71.5,361.6 0.0,362.4 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0246/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1029.0,2018.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6541004,45.5734896]}},{"type":"Feature","properties":{"resourceCoords":[111.0,2818.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.652053,45.5718016]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0247__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Oregon | 1901 | sanborn07439_004 p247 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5888.0"},{"label":"split_canvas_h","value":"8388.0"}],"created":"2026-09-24T18:35:00Z","modified":"2026-09-24T18:35:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0247__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0247","type":"ImageService3","width":1472,"height":2097},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1472.0,2097.0 1472.0,940.7 1472.0,892.0 542.9,753.9 544.4,889.8 62.5,1041.2 -0.0,1266.0 -0.0,1617.4 69.3,1657.6 755.1,1658.3 756.7,2055.6 828.3,2097.0 1472.0,2097.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294pm:g4294pm_g07439190102:07439_02_1901-0247__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1021.0,126.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.658736,45.5086669]}},{"type":"Feature","properties":{"resourceCoords":[622.0,126.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.6598006,45.5086692]}}]}}]}