{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02633_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Dubuque, Iowa | 1909 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"95"},{"label":"placed","value":"63"},{"label":"unplaced","value":"32"},{"label":"fit sources","value":"georef 37, georef-snap 24, snap:1 1, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"15 sheet(s) cut into 39 panels"},{"label":"unplaced pages","value":"p0 (tier 4, 42.50838,-90.66946 +/-3375m); p12__2 (tier 1, 42.51818,-90.66660 +/-179m); p29__2 (tier 1, 42.50293,-90.67724 +/-100m); p38 (tier 2, 42.50747,-90.66107 +/-100m); p39__1 (tier 1, 42.49957,-90.67870 +/-100m); p46 (tier 3, 42.50370,-90.65923 +/-540m); p52 (tier 1, 42.50160,-90.65917 +/-255m); p53__1 (tier 3, 42.49952,-90.65467 +/-540m); p53__2 (tier 1, 42.49817,-90.65636 +/-104m); p54 (tier 3, 42.50157,-90.65345 +/-540m); p55__1 (tier 2, 42.49776,-90.66178 +/-100m); p55__2 (tier 2, 42.49776,-90.66178 +/-100m); p56__1 (tier 3, 42.49648,-90.65559 +/-540m); p61__2 (tier 1, 42.49515,-90.66830 +/-139m); p62__2 (tier 1, 42.49022,-90.66891 +/-100m); p63__1 (tier 1, 42.49272,-90.65930 +/-184m); p63__4 (tier 1, 42.49183,-90.65840 +/-103m); p64 (tier 1, 42.48952,-90.66199 +/-208m); p65__1 (tier 1, 42.49046,-90.66566 +/-228m); p65__2 (tier 1, 42.48755,-90.66474 +/-209m); p66__1 (tier 1, 42.52792,-90.68179 +/-172m); p66__2 (tier 1, 42.52715,-90.67985 +/-100m); p66__5 (tier 1, 42.48712,-90.67420 +/-100m); p69__1 (tier 1, 42.52209,-90.66240 +/-100m); p69__2 (tier 2, 42.49816,-90.69258 +/-100m); p69__3 (tier 1, 42.52188,-90.66297 +/-100m); p69__4 (tier 1, 42.52178,-90.66272 +/-100m); p70__1 (tier 1, 42.50775,-90.68309 +/-204m); p70__2 (tier 1, 42.50845,-90.68026 +/-102m); p70__3 (tier 1, 42.50874,-90.67936 +/-119m); p70__4 (tier 1, 42.50928,-90.68102 +/-104m); p9__2 (tier 1, 42.51901,-90.67563 +/-103m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p1","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0001","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1083.8 7.5,419.3 1475.2,471.0 1442.5,-0.0 1650.0,-0.0 1650.0,1949.0 744.8,1949.0 -0.0,1083.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1014.0,475.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6807648,42.5273457]}},{"type":"Feature","properties":{"resourceCoords":[604.0,1644.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6836683,42.5267491]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0010","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1616.2 197.6,1455.7 -0.0,1253.9 0.0,0.0 758.6,0.0 758.0,66.8 1553.9,56.8 1547.2,1692.3 1063.8,1681.1 1059.3,1949.0 85.1,1949.0 -0.0,1903.3 -0.0,1616.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67642444714869,42.51503575737925]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67276796582588,42.51630350128963]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67076280754745,42.513116709166596]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67441928887025,42.51184896525622]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p11","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0011","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"97.8,148.4 1498.8,154.3 1514.9,1689.8 98.5,1698.5 97.8,148.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[784.0,1694.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6697486,42.5139742]}},{"type":"Feature","properties":{"resourceCoords":[784.0,148.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6713292,42.5165195]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0012__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p12 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2588.8"},{"label":"split_canvas_w","value":"6640.0"},{"label":"split_canvas_h","value":"5207.2"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0012__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0012","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"839.1,651.9 720.1,682.8 697.6,647.6 0.0,647.2 -0.0,744.8 140.7,744.1 141.0,804.4 61.7,821.2 52.7,1949.0 1000.1,1949.0 1288.0,1949.0 1612.9,1949.0 1604.2,1881.2 839.1,651.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0012__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[463.0,1208.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6676808,42.5169604]}},{"type":"Feature","properties":{"resourceCoords":[62.0,1301.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6683004,42.51754]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0013","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1169.7,1842.3 479.4,1818.5 473.2,1949.0 -0.0,1949.0 -0.0,52.6 1591.0,38.6 1598.4,1452.7 1660.0,1455.0 1660.0,1505.8 1179.8,1487.1 1169.7,1842.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0013/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67240367342441,42.51318601890529]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66872602083124,42.514405313107595]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66679755264985,42.511199972136566]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67047520524302,42.50998067793426]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0014","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"119.4,39.0 528.9,20.6 532.9,174.9 870.1,705.4 992.2,645.4 1246.0,1022.6 1123.2,1103.5 1319.8,1413.0 1376.6,1400.1 1660.0,1845.8 993.3,1810.1 991.1,1898.3 563.1,1883.8 571.5,1531.2 186.4,1515.6 186.5,1464.5 124.5,1462.1 119.4,39.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0014/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66914202545144,42.5142672967123]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66549033292236,42.515483498645814]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66356672262675,42.51230083823609]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66721841515583,42.51108463630257]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0015","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1496.8,111.6 1509.3,1844.2 437.9,1855.6 -0.0,1698.7 -0.0,1336.8 145.3,1334.3 133.5,885.6 -0.0,870.9 -0.0,249.1 78.4,119.5 1496.8,111.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0015/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6683072961762,42.51462186415882]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6660760770571,42.51713402516473]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6621026041502,42.51518944013123]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6643338232693,42.51267727912532]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p16","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0016","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"131.2,0.0 1660.0,0.0 1660.0,75.4 1247.8,76.2 1245.8,520.4 1364.0,517.3 1375.1,789.7 1361.2,1844.7 1239.9,1845.1 1239.4,1949.0 557.7,1949.0 559.1,1846.6 63.3,1846.2 93.3,116.0 131.2,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[78.0,1314.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6636034,42.5156001]}},{"type":"Feature","properties":{"resourceCoords":[720.0,276.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6649184,42.5175797]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0017","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 1660.0,0.0 1660.0,1949.0 -0.0,1949.0 -0.0,1774.5 121.3,1774.3 130.5,716.0 118.2,442.7 -0.0,445.6 0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66464408398052,42.51857866120966]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66248480455815,42.5211187070769]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.65846696914372,42.519236940438375]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66062624856609,42.51669689457113]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p18","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0018","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1600.3,723.2 1587.0,1777.0 1433.5,1776.0 1432.4,1941.3 148.4,1940.9 170.7,0.0 1445.9,0.0 1440.9,722.5 1600.3,723.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[317.0,1240.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6597046,42.5201588]}},{"type":"Feature","properties":{"resourceCoords":[1593.0,1240.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6580646,42.5221102]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0019","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,729.0 -0.0,-0.0 1235.3,0.0 1235.0,560.0 1375.3,575.6 1377.6,815.0 1366.4,1789.3 1234.2,1789.2 1234.1,1949.0 0.0,1949.0 0.0,1783.5 153.1,1784.4 159.1,729.6 0.0,729.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0019/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66083865014525,42.52306549077287]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.65869426814635,42.52561312718661]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.65467140613524,42.52374784885863]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.65681578813414,42.521200212444896]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p2","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0002","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"836.8,1949.0 -0.0,1949.0 -0.0,351.0 612.3,-0.0 1650.0,-0.0 1650.0,1205.9 836.8,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[616.0,466.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6815723,42.5282311]}},{"type":"Feature","properties":{"resourceCoords":[616.0,1634.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.683825,42.5268918]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0020","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1663.0,1949.0 0.0,1949.0 0.0,1774.0 131.0,1774.0 141.5,808.4 139.1,571.1 0.0,555.7 -0.0,-0.0 1663.0,0.0 1663.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0020/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.65924715883244,42.52495863631939]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.65708126549136,42.52752791514816]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.65302408441286,42.52564399238902]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.65518997775395,42.52307471356025]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0021","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1663.0,0.0 1663.0,1949.0 -0.0,1949.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0021/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.64869008589385,42.534647887176405]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.64481104300339,42.53543295400994]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.64357118560925,42.532059314647135]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.64745022849971,42.5312742478136]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p22","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0022","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"818.2,1949.0 294.0,1949.0 437.0,1516.0 421.0,-0.0 1663.0,-0.0 1663.0,1083.8 1518.5,979.5 818.2,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0022/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66273775597264,42.51623728976291]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.65931423534963,42.514601750913066]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66191362609419,42.511643047555694]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6653371467172,42.51327858640554]}},{"type":"Feature","properties":{"resourceCoords":[427.0,495.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6625189,42.5150659]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p23","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0023","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1389.8,0.0 1576.7,192.2 1206.0,542.1 1491.4,696.2 1663.0,686.5 1663.0,1767.6 1552.7,1686.7 331.3,1635.8 318.2,1949.0 -0.0,1949.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0023/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67818616246113,42.51208010452366]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67447024206862,42.51318257207009]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6727297296368,42.509949657225036]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67644565002931,42.508847189678605]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0024","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1212.0,0.0 1517.2,205.1 1559.0,1120.5 1610.0,1235.2 1645.2,1867.7 1159.9,1884.1 1162.5,1949.0 -0.0,1949.0 -0.0,-0.0 1212.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0024/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67598515586192,42.50958632829262]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6721778557386,42.51058169810917]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67060648687622,42.507269146778576]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67441378699955,42.506273776962026]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p25","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"9"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0025","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"45.6,1163.7 -0.0,1046.8 -0.0,-0.0 659.8,0.0 677.6,500.5 1148.4,481.3 1149.9,350.6 1539.6,347.2 1542.2,1815.5 536.0,1812.5 536.7,1949.0 50.2,1949.0 45.6,1163.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[536.0,1812.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6696033,42.5076964]}},{"type":"Feature","properties":{"resourceCoords":[1402.0,1329.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6680823,42.5090835]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p26","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0026","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"293.4,0.0 1148.8,0.0 1151.8,348.1 1572.1,345.3 1571.2,258.2 1663.0,259.4 1663.0,1807.1 1146.4,1803.1 1147.0,1726.7 896.2,1726.6 895.5,1949.0 -0.0,1949.0 -0.0,353.5 295.9,353.1 293.4,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[715.0,1324.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6661419,42.5096687]}},{"type":"Feature","properties":{"resourceCoords":[1150.0,836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6655995,42.5107831]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p27","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"4"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0027","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1549.5,1747.4 -0.0,1767.5 -0.0,0.0 1538.3,-0.0 1549.5,1747.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[578.0,1846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6646268,42.5110732]}},{"type":"Feature","properties":{"resourceCoords":[1541.0,554.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6608159,42.5102959]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p28","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0028","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1559.3,1730.9 -0.0,1727.0 -0.0,1473.3 77.3,1474.0 85.4,210.8 580.0,213.1 580.1,-0.0 1663.0,-0.0 1663.0,1474.0 1560.0,1474.0 1559.3,1730.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[578.0,1474.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6642637,42.5083246]}},{"type":"Feature","properties":{"resourceCoords":[1560.0,1474.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6633716,42.5066933]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0029__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p29 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6652.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0029__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0029","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,481.1 551.1,487.5 551.1,819.9 0.0,819.5 -0.0,1895.8 1663.0,1920.5 1663.0,1231.8 1518.3,1227.2 1528.1,611.6 1663.0,613.6 1663.0,56.0 1663.0,0.0 -0.0,-0.0 0.0,481.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0029__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1436.0,954.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6750394,42.5047676]}},{"type":"Feature","properties":{"resourceCoords":[917.0,1903.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6753121,42.5028043]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0003","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,0.0 53.9,-0.0 51.6,605.8 1650.0,596.5 1650.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67840933693444,42.52676515184527]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67611252173495,42.524309984317064]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.68001993844872,42.52229638412023]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.68231675364821,42.524751551648436]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p30","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0030","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,563.9 137.3,564.0 128.3,0.0 474.8,0.0 463.9,234.4 1623.7,288.3 1613.4,1949.0 1025.1,1949.0 968.4,1848.6 977.8,1637.7 930.2,1601.3 668.9,1600.5 662.7,1896.3 158.4,1887.2 147.3,1190.1 -0.0,1187.1 -0.0,563.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0030/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67567272199975,42.506351517467586]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6719268792436,42.507478270386876]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67014819041944,42.50421902215995]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67389403317559,42.50309226924066]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p31","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0031","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1485.2,232.0 1487.2,1691.8 80.0,1680.8 84.1,207.7 568.6,212.2 567.4,363.0 1054.8,364.1 1053.7,228.1 1485.2,232.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0031/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67218867989078,42.507369883514]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66843457827129,42.50848848433831]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66666872788059,42.50522210640192]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67042282950008,42.50410350557761]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p32","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0032","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"763.4,227.5 763.8,365.4 1663.0,362.9 1663.0,1688.0 189.4,1688.0 189.6,227.8 763.4,227.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0032/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1054.0,1688.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6653346,42.5061142]}},{"type":"Feature","properties":{"resourceCoords":[1487.0,1688.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.664351,42.5064044]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p33","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"11"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0033","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 454.8,0.0 455.6,130.7 1370.0,132.7 1359.2,893.9 1578.2,899.1 1551.6,1761.2 1663.0,1845.0 1663.0,1949.0 1134.0,1949.0 1231.7,1711.0 -0.0,1436.6 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0033/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[988.0,133.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6761878,42.5025363]}},{"type":"Feature","properties":{"resourceCoords":[988.0,1356.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6750267,42.5004686]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p34","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"9"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0034/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0034","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1376.9,1620.8 1373.5,1926.5 671.3,1949.0 372.8,1760.6 394.3,881.2 170.9,877.3 177.1,100.9 1440.0,118.0 1447.9,839.9 1422.3,877.7 1331.5,881.5 1323.0,1620.2 1376.9,1620.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0034/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[976.0,1357.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6723596,42.5012565]}},{"type":"Feature","properties":{"resourceCoords":[1440.0,118.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6724494,42.5036294]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p35","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0035","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"667.6,1949.0 -0.0,1949.0 -0.0,1208.0 91.0,1203.2 116.3,1164.9 103.9,142.8 397.8,152.8 406.1,389.0 463.8,489.4 1053.6,481.9 1053.4,228.7 1663.0,227.6 1663.0,1708.2 856.0,1724.2 725.9,1820.4 667.6,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0035/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[717.0,718.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6708103,42.5035721]}},{"type":"Feature","properties":{"resourceCoords":[1544.0,718.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.668943,42.5041135]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p36","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0036","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1519.0,1688.0 284.1,1693.5 286.5,229.1 1513.6,227.6 1519.0,1688.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[168.0,714.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.668943,42.5041135]}},{"type":"Feature","properties":{"resourceCoords":[1519.0,1688.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6649826,42.5033731]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p37","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"16"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0037/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0037","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1663.0,1949.0 1549.8,1949.0 1567.9,1705.1 106.0,1707.9 97.2,255.2 1381.1,246.5 1382.6,348.0 1663.0,345.4 1663.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0037/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[958.0,733.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6639048,42.5055889]}},{"type":"Feature","properties":{"resourceCoords":[526.0,733.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6648966,42.505302]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0039__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p39 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6636.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0039__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0039","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1399.0,1949.0 1472.0,1714.7 1563.0,1422.7 1598.1,93.7 1659.0,91.9 1659.0,0.0 -0.0,-0.0 -0.0,644.9 334.9,681.5 5.3,947.1 397.0,1072.4 449.2,1949.0 1399.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0039__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1149.0,677.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.682905,42.4984653]}},{"type":"Feature","properties":{"resourceCoords":[397.0,1072.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6845801,42.4976043]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0004","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1650.0,1949.0 155.4,1949.0 143.3,601.0 548.5,588.3 543.7,170.9 1525.6,189.7 1522.0,-0.0 1650.0,-0.0 1650.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67629472919641,42.52451964320133]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67403179512495,42.52205364310672]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67795635833053,42.52006969891068]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.680219292402,42.52253569900529]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p40","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0040","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1659.0,1949.0 -0.0,1949.0 -0.0,1670.3 130.0,1293.5 200.7,0.0 1659.0,0.0 1659.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0040/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.68249430667487,42.49953399532695]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67847858772572,42.499995810045526]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6777478949264,42.49649291472786]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.68176361387555,42.49603110000928]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p41","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0041","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 1540.0,0.0 1448.5,513.2 1267.7,551.5 1446.7,1441.0 1487.2,1481.8 1280.5,1768.5 1043.8,1949.0 945.4,1949.0 294.5,1718.7 -0.0,1781.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0041/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67783208875542,42.49954120346154]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67384467982718,42.500077558257054]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67299604652425,42.49659936442725]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67698345545249,42.49606300963173]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p42","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0042","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"456.1,1062.3 350.4,1061.4 457.2,854.9 449.2,174.1 792.7,183.1 824.5,-0.0 1352.0,-0.0 1317.4,1512.6 1650.9,1885.2 1601.7,1915.8 688.3,1892.0 691.2,1705.9 448.7,1603.0 456.1,1062.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0042/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67098105574362,42.50144566987068]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66939984768788,42.49869823062697]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67374699890826,42.49731897973371]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.675328206964,42.50006641897742]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p43","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0043","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1130.8 -0.0,480.9 611.2,481.3 691.4,327.9 826.5,249.9 1487.5,242.8 1496.7,1474.8 191.8,1484.4 197.8,1159.1 -0.0,1130.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0043/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1001.0,733.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6687208,42.5013267]}},{"type":"Feature","properties":{"resourceCoords":[1496.0,1220.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6671644,42.5008389]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p44","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0044","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"160.8,236.7 1524.8,238.8 1519.9,1949.0 158.9,1949.0 158.7,1838.7 106.0,1756.2 160.4,1656.7 160.8,236.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0044/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[164.0,728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6676037,42.5016523]}},{"type":"Feature","properties":{"resourceCoords":[1520.0,728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6645503,42.5025577]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p45","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0045/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0045","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"114.6,1702.5 112.5,244.0 1580.8,247.2 1561.7,492.1 1659.0,492.5 1659.0,1949.0 1633.9,1949.0 1637.7,1697.7 114.6,1702.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0045/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[965.0,1699.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6617187,42.5014946]}},{"type":"Feature","properties":{"resourceCoords":[112.0,244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6649826,42.5033731]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p47","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"9"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0047/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0047","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1490.5 -0.0,0.0 1374.7,-0.0 1371.5,534.1 1538.6,552.9 1539.0,1750.7 321.2,1752.9 321.8,1831.3 -0.0,1490.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0047/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1117.0,1415.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6718909,42.4963529]}},{"type":"Feature","properties":{"resourceCoords":[1539.0,1798.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6723798,42.4953764]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p48","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0048/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0048","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 1659.0,-0.0 1659.0,1949.0 -0.0,1949.0 -0.0,1311.9 359.4,723.7 379.8,627.6 252.3,359.0 -0.0,81.7 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0048/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67340453687464,42.49747000730998]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67187050165994,42.494679896663584]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67628488844947,42.493341708210274]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67781892366418,42.49613181885667]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p49","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0049/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0049","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1514.9,1722.3 515.9,1719.2 516.5,1617.8 209.3,1616.2 196.7,0.0 1515.3,0.0 1514.5,185.0 1459.7,285.1 1512.7,368.3 1514.9,1722.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0049/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1017.0,251.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6678236,42.4996693]}},{"type":"Feature","properties":{"resourceCoords":[1514.0,1224.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6658369,42.498395]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0005","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1650.0,0.0 1650.0,974.5 1249.0,967.9 1249.2,1915.4 891.9,1917.9 900.4,969.3 496.0,975.8 516.1,1921.5 116.0,1924.0 91.3,0.0 1650.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67974310557699,42.52596477512727]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67629067555015,42.52772998312125]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67348122015032,42.52470338736744]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67693365017716,42.522938179373455]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p50","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0050","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"215.7,489.8 1561.5,480.4 1565.2,1216.1 1659.0,1217.7 1659.0,1780.2 1497.6,1949.0 695.5,1949.0 227.7,1949.0 215.7,489.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0050/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[222.0,1221.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6658369,42.498395]}},{"type":"Feature","properties":{"resourceCoords":[1562.0,732.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6632173,42.5001074]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0051/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p51","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0051/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0051","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"108.0,1949.0 265.5,1782.0 258.4,1227.3 165.5,1226.5 148.6,272.1 1659.0,251.7 1659.0,1949.0 108.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0051/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66423991780768,42.50128993393234]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66040701633833,42.502377947348776]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.658685479274,42.49903463898557]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66251838074335,42.497946625569135]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0056__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p56 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6636.0"},{"label":"split_canvas_h","value":"2281.6"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0056__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0056","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 0.0,570.1 1659.0,570.4 1659.0,-0.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0056__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66000503235686,42.49652190838042]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.65781467907468,42.49897847865072]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,570.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.65667797051397,42.498419685379204]}},{"type":"Feature","properties":{"resourceCoords":[0.0,570.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.65886832379616,42.495963115108914]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0057/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p57","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0057/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0057","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1312.0,246.1 1310.0,1744.0 455.7,1741.0 361.2,1702.5 333.0,1521.2 337.7,243.1 1312.0,246.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0057/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1310.0,1744.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6640099,42.4950406]}},{"type":"Feature","properties":{"resourceCoords":[825.0,245.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6665042,42.4972447]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p58","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0058","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1661.0,489.4 1661.0,1665.9 214.9,1652.1 213.2,482.7 1661.0,489.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0058/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[215.0,732.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6649363,42.4967527]}},{"type":"Feature","properties":{"resourceCoords":[215.0,1744.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6640099,42.4950406]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0059/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p59","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0059/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0059","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"742.9,246.9 724.4,70.5 1661.0,87.2 1661.0,1949.0 240.7,1949.0 67.2,1062.0 117.3,883.5 421.2,368.4 742.9,246.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0059/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66771423504223,42.49409451321572]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66400761013401,42.49521225622197]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66224136218148,42.4919826219658]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6659479870897,42.490864878959556]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0006","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"860.2,0.0 1650.0,0.0 1650.0,1949.0 91.0,1949.0 84.9,6.8 501.2,0.0 497.0,974.8 864.8,970.5 860.2,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67748139401135,42.52490269831181]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6741173944866,42.526605926800734]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67140667204323,42.523656758367466]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67477067156798,42.521953529878544]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p60","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0060/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0060","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"186.1,90.0 150.0,90.8 149.0,0.0 1661.0,0.0 1661.0,1288.1 1451.5,1192.1 1661.0,1413.8 1661.0,1933.7 980.5,1556.5 902.1,1551.1 719.6,1949.0 -0.0,1949.0 -0.0,1921.6 210.4,1917.8 186.1,90.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0060/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1472.0,1825.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6594204,42.4929714]}},{"type":"Feature","properties":{"resourceCoords":[150.0,92.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6640099,42.4950406]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0061__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p61 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6644.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0061__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0061","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1221.7,66.1 -0.0,67.5 -0.0,917.4 148.1,915.9 172.1,945.7 177.2,1949.0 618.5,1949.0 619.8,1083.2 1237.8,1080.8 1221.7,66.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0061__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1396.0,705.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6679023,42.4943395]}},{"type":"Feature","properties":{"resourceCoords":[598.0,705.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6686168,42.4956684]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0062__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p62 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6644.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0062__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0062","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1661.0,1949.0 1661.0,613.3 1383.9,627.5 1382.2,630.5 1315.8,664.0 1169.1,609.8 671.0,311.6 860.9,-0.0 392.2,-0.0 339.0,99.0 -0.0,109.5 0.0,1110.4 -0.0,1949.0 1661.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0062__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[160.0,733.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6679023,42.4943395]}},{"type":"Feature","properties":{"resourceCoords":[671.0,312.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6664404,42.4937676]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0063__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p63 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"2288.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4355.6"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0063__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0063","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"573.5,502.4 572.1,1080.9 1092.8,1090.3 1088.3,1949.0 1142.0,1949.0 1661.0,1949.0 1661.0,0.0 1117.1,0.0 1119.2,91.0 1159.0,106.0 1159.2,106.1 1360.3,544.6 726.3,485.4 573.5,502.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0063__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1159.0,526.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6594204,42.4929714]}},{"type":"Feature","properties":{"resourceCoords":[1159.0,106.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6593537,42.4937925]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0063__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p63 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"2294.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2218.4"},{"label":"split_canvas_h","value":"1940.4"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0063__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0063","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"654.7,-0.0 654.2,479.6 1104.3,484.8 1120.6,153.9 1117.1,0.0 654.7,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0063__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[654.5,62.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6608159,42.5102959]}},{"type":"Feature","properties":{"resourceCoords":[1104.2,458.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6613536,42.5091855]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0066__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p66 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"1859.2"},{"label":"split_canvas_y","value":"2069.6"},{"label":"split_canvas_w","value":"4784.8"},{"label":"split_canvas_h","value":"2114.0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0066__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0066","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1661.0,527.4 464.8,517.4 464.8,807.0 624.4,1035.9 1661.0,1045.9 1661.0,527.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0066__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[464.8,517.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6771166926422,42.48656488874349]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,517.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67431936674397,42.48722273690258]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,1045.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67392511075515,42.48631111768039]}},{"type":"Feature","properties":{"resourceCoords":[464.8,1045.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67672243665338,42.48565326952129]}},{"type":"Feature","properties":{"resourceCoords":[1120.3,728.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6754264,42.4865618]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0066__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p66 [4]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"2496.4"},{"label":"split_canvas_y","value":"4143.6"},{"label":"split_canvas_w","value":"4147.6"},{"label":"split_canvas_h","value":"3652.4"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0066__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0066","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1661.0,1701.3 1661.0,1595.0 1661.0,1496.3 1661.0,1045.9 624.4,1035.9 624.3,1183.2 624.3,1238.2 725.7,1228.3 671.1,1858.1 1139.1,1808.5 1153.0,1949.0 1661.0,1949.0 1661.0,1701.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0066__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[624.1,1035.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.68277650047033,42.52942891477418]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,1035.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6806500581198,42.53045825377758]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67941974124057,42.52907618409983]}},{"type":"Feature","properties":{"resourceCoords":[624.1,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6815461835911,42.528046845096426]}},{"type":"Feature","properties":{"resourceCoords":[671.1,1858.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6815723,42.5282311]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0067/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p67","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0067/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0067","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1661.0,-0.0 1661.0,1949.0 1356.0,1949.0 1352.2,1657.9 1292.5,1658.7 1278.6,1949.0 -0.0,1949.0 -0.0,355.2 288.4,629.5 357.1,235.9 1188.5,70.7 1178.9,-0.0 1661.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0067/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.68398725377489,42.49825524822988]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.68403130161182,42.49520547144255]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.68885081144663,42.4952438487219]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.68880676360969,42.49829362550923]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0068/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p68","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0068/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0068","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1661.0,1949.0 -0.0,1949.0 -0.0,0.0 287.0,-0.0 283.3,277.5 1582.3,294.8 1587.4,213.7 1600.4,-0.0 1661.0,-0.0 1661.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0068/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.68813304390987,42.49880685906028]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.68812275300905,42.495805170447454]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.69286631140635,42.495796204438015]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.69287660230717,42.49879789305084]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0007","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"643.0,1949.0 -0.0,1949.0 -0.0,0.0 1650.0,-0.0 1650.0,47.3 1562.6,48.4 1560.1,1875.8 643.6,1918.8 643.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67151690786054,42.52161284898044]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.66964200645621,42.5189360466833]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.6739018579445,42.517292219863144]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.67577675934882,42.51996902216028]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p8 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3032.0"},{"label":"split_canvas_w","value":"2192.0"},{"label":"split_canvas_h","value":"4764.0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0008","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"118.2,1155.9 80.6,1834.2 516.5,1838.9 516.3,1615.6 547.0,1769.2 541.3,758.0 0.0,760.9 -0.0,1179.6 118.2,1155.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[110.0,1420.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.669278,42.5198522]}},{"type":"Feature","properties":{"resourceCoords":[517.0,1420.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6683068,42.520033]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0008__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p8 [2]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"13"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6600.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0008__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0008","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"608.2,1912.6 1548.4,1892.7 1572.0,75.3 1650.0,59.2 1650.0,-0.0 525.3,-0.0 742.9,43.3 653.4,466.9 -0.0,298.2 -0.0,727.6 645.7,707.1 647.5,754.2 560.1,758.1 608.2,1912.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0008__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[653.0,467.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6690975,42.5191119]}},{"type":"Feature","properties":{"resourceCoords":[586.0,1428.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6713159,42.5184686]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0009__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dubuque, Iowa | 1909 | sanborn02633_004 p9 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6600.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-22T01:45:26Z","modified":"2026-09-22T01:45:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0009__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0009","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"829.9,0.0 -0.0,-0.0 -0.0,1716.3 63.6,1717.9 61.1,1785.5 863.5,1794.6 861.6,1874.0 1559.2,1897.6 1557.0,934.0 874.1,939.2 829.9,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154dm:g026331909:02633_1909-0009__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1218.0,1886.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6720787,42.5162663]}},{"type":"Feature","properties":{"resourceCoords":[1557.0,934.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.6723746,42.5180517]}}]}}]}