{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn01166_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Portland, Connecticut | 1912 | mapsnap generated fit (2026-09-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-20"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"23"},{"label":"placed","value":"9"},{"label":"unplaced","value":"14"},{"label":"fit sources","value":"georef 5, georef-snap 4"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"7 sheet(s) cut into 17 panels"},{"label":"unplaced pages","value":"p1 (tier 1, 41.58837,-72.62479 +/-263m); p11__1 (tier 1, 41.57103,-72.64230 +/-268m); p12 (tier 3, 41.56830,-72.64478 +/-424m); p13__1 (tier 1, 41.56942,-72.63315 +/-113m); p13__2 (tier 1, 41.56950,-72.63173 +/-106m); p13__4 (tier 1, 41.56936,-72.63102 +/-100m); p2__1 (tier 3, 41.58913,-72.62855 +/-424m); p2__2 (tier 1, 41.59055,-72.62456 +/-100m); p3__1 (tier 1, 41.58870,-72.62607 +/-265m); p3__2 (tier 1, 41.59029,-72.62454 +/-100m); p4__1 (tier 1, 41.57596,-72.64464 +/-130m); p4__2 (tier 1, 41.57757,-72.64434 +/-100m); p9__2 (tier 2, 41.57356,-72.63611 +/-100m); p9__3 (tier 1, 41.57037,-72.63360 +/-116m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Connecticut | 1912 | sanborn01166_006 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T22:58:29Z","modified":"2026-09-20T22:58:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 593.5,1913.0 657.5,1860.1 324.2,1833.9 326.4,1783.0 323.4,1655.6 -0.0,1635.1 -0.0,0.0 1613.0,0.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63052776611958,41.573014336277176]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.62661092192832,41.5716344198298]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.62878311108908,41.56813454389019]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63269995528034,41.569514460337565]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0011__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Connecticut | 1912 | sanborn01166_006 p11 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1027.6"},{"label":"split_canvas_w","value":"1829.6"},{"label":"split_canvas_h","value":"2868.0"}],"created":"2026-09-20T22:58:29Z","modified":"2026-09-20T22:58:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0011__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,973.9 342.2,962.4 340.7,903.7 402.4,903.0 400.2,504.0 454.2,503.6 454.1,481.9 419.5,257.2 0.0,261.3 0.0,973.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0011__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,256.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.64109093043787,41.57400452554661]}},{"type":"Feature","properties":{"resourceCoords":[457.4,256.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.64009255638594,41.57357225426972]}},{"type":"Feature","properties":{"resourceCoords":[457.4,973.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.64099886679821,41.57239684480665]}},{"type":"Feature","properties":{"resourceCoords":[0.0,973.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.64199724085015,41.57282911608354]}},{"type":"Feature","properties":{"resourceCoords":[402.4,903.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.6410294,41.5725651]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0013__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Connecticut | 1912 | sanborn01166_006 p13 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2599.6"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"5052.4"}],"created":"2026-09-20T22:58:29Z","modified":"2026-09-20T22:58:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0013__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"611.0,1913.0 849.0,1913.0 1613.0,1913.0 1613.0,1057.0 1613.0,886.7 1537.0,892.9 1599.5,831.5 1246.2,832.2 1229.7,650.0 810.7,650.0 0.0,650.1 0.0,1190.3 464.0,1187.3 470.5,1527.5 0.0,1532.5 -0.0,1913.0 611.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0013__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[545.0,805.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.6333338,41.5700899]}},{"type":"Feature","properties":{"resourceCoords":[1245.0,805.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.6317914,41.5694275]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Connecticut | 1912 | sanborn01166_006 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T22:58:29Z","modified":"2026-09-20T22:58:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,0.0 1613.0,1913.0 -0.0,1913.0 -0.0,-0.0 1613.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63670502599598,41.58105687555716]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63390350699216,41.5833639854658]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63027119897608,41.58086110336003]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.6330727179799,41.578553993451386]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Connecticut | 1912 | sanborn01166_006 p6 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3503.2"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-20T22:58:29Z","modified":"2026-09-20T22:58:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 875.8,1913.0 842.6,38.0 427.9,42.0 430.4,234.8 -0.0,151.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63582171916678,41.580828868075166]}},{"type":"Feature","properties":{"resourceCoords":[875.8,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63393871562114,41.57996163717168]}},{"type":"Feature","properties":{"resourceCoords":[875.8,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63646602236146,41.576880225982194]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.6383490259071,41.57774745688568]}},{"type":"Feature","properties":{"resourceCoords":[427.9,42.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.6349572,41.5803375]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0006__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Connecticut | 1912 | sanborn01166_006 p6 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"3367.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3084.4"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-20T22:58:29Z","modified":"2026-09-20T22:58:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0006__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,0.0 841.9,0.0 875.8,1913.0 1613.0,1913.0 1613.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0006__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1431.2,1012.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.6393106,41.574814]}},{"type":"Feature","properties":{"resourceCoords":[1431.2,261.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.638368,41.5760433]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Connecticut | 1912 | sanborn01166_006 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T22:58:29Z","modified":"2026-09-20T22:58:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"70.0,1824.9 71.3,1913.0 -0.0,1913.0 -0.0,195.8 477.0,200.8 480.1,0.0 1613.0,0.0 1613.0,1753.1 70.0,1824.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63724423288919,41.577677272365314]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63372940584097,41.57609692531]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63621728251104,41.572956497684224]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63973210955926,41.57453684473954]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Connecticut | 1912 | sanborn01166_006 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T22:58:29Z","modified":"2026-09-20T22:58:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 295.1,0.0 294.4,60.7 686.9,68.3 686.1,125.3 748.7,127.0 685.9,138.3 678.4,679.6 868.1,1709.1 1532.2,1589.6 1532.5,1621.0 1613.0,1624.0 1613.0,1913.0 0.0,1913.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.64152640308907,41.57212320791044]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63954995313418,41.57485155324606]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63525501253172,41.57308555932248]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.63723146248661,41.57035721398685]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0009__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Connecticut | 1912 | sanborn01166_006 p9 [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":"6452.0"},{"label":"split_canvas_h","value":"4698.8"}],"created":"2026-09-20T22:58:29Z","modified":"2026-09-20T22:58:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0009__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"536.9,1173.5 834.5,1173.8 874.5,977.8 1613.0,976.2 1613.0,481.3 101.0,214.0 83.0,301.9 12.4,285.9 75.0,0.0 -0.0,-0.0 -0.0,1066.3 536.9,1173.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784pm:g3784pm_g011661912:01166_1912-0009__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[101.0,213.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.6394649,41.5746128]}},{"type":"Feature","properties":{"resourceCoords":[-76.0,1078.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.640565,41.5731778]}}]}}]}