{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02345_008.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Gary, Indiana | 1951 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"96"},{"label":"placed","value":"91"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef 68, georef-snap 23"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p0 (tier 1, 41.60545,-87.34792 +/-258m); p39__2 (tier 1, 41.60487,-87.35770 +/-184m); p40__1 (tier 1, 41.60952,-87.35173 +/-100m); p40__3 (tier 1, 41.58254,-87.33971 +/-100m); p88__2 (tier 1, 41.59417,-87.32889 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p1","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0001","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"306.4,126.8 -0.0,66.3 0.0,0.0 1337.1,9.2 1361.4,1696.7 320.8,1694.8 306.4,126.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1365.0,683.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3371761,41.6038952]}},{"type":"Feature","properties":{"resourceCoords":[323.0,681.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3397002,41.6038765]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p10","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0010","type":"ImageService3","width":1647,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1106.1,1465.9 612.0,1462.0 610.4,464.8 1110.0,470.0 1106.1,1465.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[612.0,1462.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3396115,41.5983997]}},{"type":"Feature","properties":{"resourceCoords":[1110.0,470.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3384449,41.600208]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p11","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0011","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1131.0,440.0 1131.0,1388.3 586.3,1396.4 581.0,443.8 1131.0,440.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1131.0,1451.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3371155,41.5984137]}},{"type":"Feature","properties":{"resourceCoords":[1131.0,440.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3371305,41.6002208]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p12","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0012","type":"ImageService3","width":1647,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1647.0,1434.2 309.2,1429.9 312.0,430.5 1647.0,433.9 1647.0,1434.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[855.0,1435.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.335796,41.5984133]}},{"type":"Feature","properties":{"resourceCoords":[312.0,430.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3371305,41.6002208]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p13","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0013","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"633.8,818.5 340.2,817.3 346.5,0.0 1348.0,0.0 1340.3,1831.3 630.5,1829.0 633.8,818.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[843.0,819.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3334024,41.6002401]}},{"type":"Feature","properties":{"resourceCoords":[1344.0,819.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3322035,41.6002511]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p14","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0014","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1345.3,1811.4 311.9,1815.0 304.1,0.0 1334.0,0.0 1345.3,1811.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[307.0,817.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3322035,41.6002511]}},{"type":"Feature","properties":{"resourceCoords":[810.0,1812.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3309733,41.598448]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p15","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0015","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"359.9,1920.0 345.0,1074.0 -0.0,1074.5 -0.0,79.5 1344.3,77.3 1342.9,1920.0 359.9,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[345.0,1074.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3420261,41.5965682]}},{"type":"Feature","properties":{"resourceCoords":[845.0,77.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.340828,41.5983927]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0016","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1091.3,1920.0 591.1,1920.0 603.4,53.4 1095.5,56.5 1091.3,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34107846638409,41.598481682928124]}},{"type":"Feature","properties":{"resourceCoords":[1649.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3370741628836,41.59852436829332]}},{"type":"Feature","properties":{"resourceCoords":[1649.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33700816955447,41.595013075082484]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34101247305496,41.59497038971729]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0017","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1110.0,1920.0 569.0,1920.0 586.2,0.0 1128.9,0.0 1110.0,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33982381653186,41.5984831237358]}},{"type":"Feature","properties":{"resourceCoords":[1649.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33586910947388,41.5985453966735]}},{"type":"Feature","properties":{"resourceCoords":[1649.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33577283298327,41.59507759247856]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33972754004125,41.595015319540856]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p18","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0018","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"840.8,1920.0 304.9,1920.0 311.6,59.1 1341.0,70.0 1335.5,1055.9 1003.2,1054.7 1000.6,1644.3 841.2,1640.9 840.8,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[842.0,1054.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3357788,41.5966029]}},{"type":"Feature","properties":{"resourceCoords":[1341.0,70.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3345903,41.5984214]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p19","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0019","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1051.7 339.4,1051.3 340.5,44.3 1343.2,44.6 1343.0,1053.0 1649.0,1053.3 1649.0,1920.0 -0.0,1920.0 -0.0,1051.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[843.0,1053.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3333591,41.5966189]}},{"type":"Feature","properties":{"resourceCoords":[1343.0,1053.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3321585,41.596628]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0002","type":"ImageService3","width":1647,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1324.4,1686.1 285.9,1679.0 263.9,0.0 1647.0,0.0 1647.0,199.7 1016.2,191.3 1009.9,669.6 1326.0,671.0 1324.4,1686.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[827.0,1681.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3358385,41.6020678]}},{"type":"Feature","properties":{"resourceCoords":[1326.0,671.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3346559,41.6039189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0020","type":"ImageService3","width":1644,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"633.2,1038.5 329.2,1035.7 337.1,40.9 1374.8,51.9 1360.5,1920.0 -0.0,1920.0 -0.0,1888.5 626.6,1893.4 633.2,1038.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0020/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33299901871378,41.59850256687929]}},{"type":"Feature","properties":{"resourceCoords":[1644.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.32902551192156,41.59855604874535]}},{"type":"Feature","properties":{"resourceCoords":[1644.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.32894257531,41.59506116241691]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33291608210222,41.59500768055085]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0021","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"144.0,1920.0 155.6,29.9 1657.0,42.1 1657.0,1920.0 144.0,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0021/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33005198446311,41.598502738080974]}},{"type":"Feature","properties":{"resourceCoords":[1657.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.32603672236012,41.59855207178048]}},{"type":"Feature","properties":{"resourceCoords":[1657.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.32596081870595,41.595048166638776]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.32997608080895,41.59499883293927]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p22","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0022","type":"ImageService3","width":1644,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1451.0,1023.0 1644.0,1022.5 1644.0,1920.0 359.3,1920.0 344.6,14.8 1452.2,14.1 1451.0,1023.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[953.0,1023.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3245511,41.5966708]}},{"type":"Feature","properties":{"resourceCoords":[1451.0,1023.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3233532,41.5966784]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p23","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0023","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1289.6,302.9 1348.6,398.5 1657.0,642.0 1657.0,1865.8 362.8,1815.2 362.4,287.4 289.7,125.2 1257.0,120.0 1256.7,150.2 1261.2,165.6 1289.6,302.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0023/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34266551389398,41.59521649536538]}},{"type":"Feature","properties":{"resourceCoords":[1657.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33860287079527,41.59527787188961]}},{"type":"Feature","properties":{"resourceCoords":[1657.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3385084431656,41.5917324386306]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3425710862643,41.59167106210637]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p24","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0024","type":"ImageService3","width":1644,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1334.4,1853.4 737.5,1831.8 733.4,621.2 429.6,381.4 371.4,287.1 343.0,151.3 731.9,160.1 825.2,116.8 1143.2,115.4 1141.9,169.2 1344.5,173.8 1334.4,1853.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[825.0,1835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3382926,41.5918293]}},{"type":"Feature","properties":{"resourceCoords":[825.0,161.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3383617,41.5949542]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p25","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"4"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0025","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"373.0,1920.0 373.0,171.9 1657.0,208.4 1657.0,1920.0 373.0,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[373.0,1153.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3416647,41.590095]}},{"type":"Feature","properties":{"resourceCoords":[373.0,593.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3416773,41.5911128]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p26","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0026","type":"ImageService3","width":1654,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1654.0,1202.1 1348.3,1197.0 1349.5,1920.0 718.8,1920.0 718.2,213.0 1654.0,240.3 1654.0,1202.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[834.0,1184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3382608,41.5900568]}},{"type":"Feature","properties":{"resourceCoords":[1349.0,231.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3370205,41.5918107]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p27","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0027","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"365.4,1481.7 353.1,541.0 924.1,533.5 949.5,1484.2 365.4,1481.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[358.0,918.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.341639,41.5880211]}},{"type":"Feature","properties":{"resourceCoords":[1306.0,918.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3393533,41.5880146]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p28","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0028","type":"ImageService3","width":1654,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,530.9 1344.6,565.1 1351.5,0.0 1654.0,0.0 1654.0,934.4 1340.0,937.0 1332.8,1523.5 -0.0,1468.8 -0.0,530.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[828.0,937.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.338224,41.5880027]}},{"type":"Feature","properties":{"resourceCoords":[1340.0,937.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3369726,41.5880241]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p29","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0029","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1330.1,1848.8 290.5,1823.0 292.4,1232.2 608.6,1226.7 600.0,285.4 295.2,288.2 295.8,120.7 1336.9,143.2 1330.1,1848.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[837.0,1234.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3356509,41.5880343]}},{"type":"Feature","properties":{"resourceCoords":[291.0,1823.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3369575,41.5869518]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p3","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0003","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"317.0,477.0 -0.0,479.8 -0.0,0.0 1649.0,0.0 1649.0,621.0 967.3,474.9 976.0,1693.8 334.2,1701.8 317.0,477.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1321.0,1485.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3322185,41.6020885]}},{"type":"Feature","properties":{"resourceCoords":[317.0,477.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3346559,41.6039189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p30","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0030","type":"ImageService3","width":1654,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1300.2,1818.1 357.8,1796.7 360.6,103.4 -0.0,96.4 -0.0,-0.0 1654.0,0.0 1654.0,128.4 1301.1,121.6 1300.2,1818.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0030/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[855.0,1808.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3332185,41.5869205]}},{"type":"Feature","properties":{"resourceCoords":[855.0,113.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3332655,41.590019]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p31","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0031","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1300.7,150.4 1304.6,1759.7 362.4,1734.4 368.4,130.8 1300.7,150.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0031/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[836.0,704.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3404688,41.5859708]}},{"type":"Feature","properties":{"resourceCoords":[836.0,1750.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3404356,41.5840643]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p32","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"16"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0032","type":"ImageService3","width":1654,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1330.8,1788.8 361.8,1761.1 357.4,158.3 1336.5,192.2 1330.8,1788.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0032/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[827.0,732.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3381872,41.585952]}},{"type":"Feature","properties":{"resourceCoords":[1334.0,1320.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3369283,41.5848878]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p33","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"18"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0033","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1335.7,150.8 1333.8,1763.0 291.1,1746.3 291.4,129.3 1335.7,150.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0033/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[837.0,1281.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3356131,41.5848799]}},{"type":"Feature","properties":{"resourceCoords":[837.0,141.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3356391,41.5869406]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p34","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0034/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0034","type":"ImageService3","width":1654,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1316.6,168.3 1312.2,1773.6 367.0,1761.0 364.4,151.2 1316.6,168.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0034/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[870.0,722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3332016,41.5859038]}},{"type":"Feature","properties":{"resourceCoords":[367.0,1761.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3344019,41.5840173]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p35","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0035","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1920.0 -0.0,77.0 1612.4,121.7 1603.7,1920.0 1060.4,1515.4 1060.8,1490.7 1061.6,1310.0 620.3,1308.7 619.9,1920.0 -0.0,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0035/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33948188829253,41.5841980250537]}},{"type":"Feature","properties":{"resourceCoords":[1657.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33550503461278,41.584244607611915]}},{"type":"Feature","properties":{"resourceCoords":[1657.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33543337966795,41.58077345089165]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33941023334769,41.580726868333436]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p36","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0036","type":"ImageService3","width":1654,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"96.4,1803.5 98.2,613.0 569.5,611.5 568.2,0.0 1006.5,0.0 1006.0,205.5 1654.0,697.9 1654.0,835.3 1513.3,842.9 1511.7,1515.8 1654.0,1624.2 1654.0,1920.0 1509.3,1920.0 1509.4,1823.0 96.4,1803.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[570.0,825.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3379149,41.5803585]}},{"type":"Feature","properties":{"resourceCoords":[1511.0,1823.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3356105,41.5785762]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p37","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0037/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0037","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"136.5,1920.0 137.8,165.6 1554.6,183.5 1554.0,1920.0 136.5,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0037/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[611.0,1161.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3378601,41.5767926]}},{"type":"Feature","properties":{"resourceCoords":[1555.0,1175.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3355821,41.5767869]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p38","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0038","type":"ImageService3","width":1654,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1546.3,1722.1 132.7,1685.6 141.9,490.6 1555.3,502.2 1546.3,1722.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0038/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[610.0,728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3378401,41.5750001]}},{"type":"Feature","properties":{"resourceCoords":[1553.0,743.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3355581,41.5750066]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0039__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p39 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2572.4"},{"label":"split_canvas_w","value":"6628.0"},{"label":"split_canvas_h","value":"5107.6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0039__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0039","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1920.0 218.4,1920.0 219.0,1758.4 1474.5,1758.3 1470.4,1268.0 1282.1,1269.4 1289.4,1201.7 1466.5,1200.9 1464.0,858.5 1435.8,783.0 1330.0,824.2 1337.4,755.0 1091.5,841.1 0.0,735.1 -0.0,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0039__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[469.0,1759.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.355763,41.6037981]}},{"type":"Feature","properties":{"resourceCoords":[1221.0,1759.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3521344,41.60381]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p4","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0004","type":"ImageService3","width":1647,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"17.1,474.6 685.6,626.1 690.0,0.6 1039.3,0.0 1049.4,730.5 1371.2,822.9 1385.0,1693.7 347.8,1690.4 347.8,1700.0 -0.0,1701.9 17.1,474.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[849.0,1494.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3310133,41.6020948]}},{"type":"Feature","properties":{"resourceCoords":[349.0,1494.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3322185,41.6020885]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0040__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p40 [2]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"24"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6616.0"},{"label":"split_canvas_h","value":"7680.0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0040__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0040","type":"ImageService3","width":1654,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"190.0,1309.2 247.3,1803.8 1395.7,1677.2 1338.4,1182.2 1654.0,1148.4 1654.0,319.7 1032.4,314.1 1037.4,0.0 526.8,0.0 522.8,473.8 0.0,451.0 -0.0,876.4 102.4,823.3 141.7,904.4 178.8,1241.8 -0.0,1261.9 -0.0,1331.0 190.0,1309.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0040__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[443.0,1281.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3497319,41.6055932]}},{"type":"Feature","properties":{"resourceCoords":[1494.0,1025.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3446404,41.606115]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p41","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0041","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1645.2 -0.0,668.8 621.7,674.3 699.8,0.0 1657.0,0.0 1657.0,1044.3 1371.0,1043.0 1368.1,1652.7 -0.0,1645.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0041/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1371.0,1043.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3421155,41.6049695]}},{"type":"Feature","properties":{"resourceCoords":[334.0,1647.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3446121,41.6038502]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p42","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0042","type":"ImageService3","width":1654,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"347.6,136.7 634.3,138.4 634.6,0.0 1654.0,0.0 1654.0,73.9 1015.4,72.3 1026.4,140.9 1321.7,185.4 1332.2,1770.2 337.2,1757.7 347.6,136.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1337.0,755.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3397002,41.6038765]}},{"type":"Feature","properties":{"resourceCoords":[839.0,1764.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.34087,41.602038]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p43","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0043","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"331.9,631.1 332.6,307.6 1336.0,308.0 1314.6,1049.7 1209.2,1164.5 1206.9,1494.4 1247.0,1534.3 -0.0,1508.9 -0.0,631.6 331.9,631.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0043/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[833.0,308.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.355763,41.6037981]}},{"type":"Feature","properties":{"resourceCoords":[1336.0,308.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3545504,41.6038006]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p44","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0044","type":"ImageService3","width":1654,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"310.4,1062.0 341.2,306.1 1339.0,303.9 1337.5,1561.4 284.6,1559.0 212.3,1487.2 214.8,1158.8 310.4,1062.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0044/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[837.0,306.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.35335,41.6038035]}},{"type":"Feature","properties":{"resourceCoords":[1339.0,1318.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.352127,41.6019739]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p45","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0045/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0045","type":"ImageService3","width":1657,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"304.5,1501.9 303.0,299.0 1312.6,292.6 1315.0,1309.0 1272.8,1309.4 1266.0,1500.1 304.5,1501.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0045/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[813.0,1313.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.350902,41.6019815]}},{"type":"Feature","properties":{"resourceCoords":[303.0,299.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3521344,41.60381]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p46","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0046/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0046","type":"ImageService3","width":1656,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"308.0,1308.8 349.9,1308.7 353.9,298.0 1347.0,298.0 1346.4,1496.8 288.1,1498.3 308.0,1308.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0046/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[847.0,298.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3485028,41.6038294]}},{"type":"Feature","properties":{"resourceCoords":[1347.0,298.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3472901,41.6038359]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p47","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0047/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0047","type":"ImageService3","width":1650,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"288.2,1520.6 283.0,310.0 1391.9,304.7 1401.8,1510.4 288.2,1520.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0047/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[820.0,1321.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3459875,41.602012]}},{"type":"Feature","properties":{"resourceCoords":[283.0,310.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3472901,41.6038359]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p48","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0048/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0048","type":"ImageService3","width":1656,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"341.2,1496.5 338.1,299.1 1374.0,300.0 1374.0,1309.0 1035.0,1309.1 1035.2,1496.4 341.2,1496.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0048/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1374.0,1309.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3420843,41.6020363]}},{"type":"Feature","properties":{"resourceCoords":[1374.0,300.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3421038,41.6038636]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p49","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0049/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0049","type":"ImageService3","width":1650,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1241.5,24.0 1324.3,216.9 1317.7,1712.0 787.5,1842.4 331.1,1883.2 331.1,1920.0 -0.0,1920.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0049/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[831.0,1127.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3557391,41.599557]}},{"type":"Feature","properties":{"resourceCoords":[831.0,1833.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.355736,41.598257]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p5","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0005","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,626.5 -0.0,607.9 -0.0,440.2 1326.2,447.5 1326.7,1456.2 335.7,1920.0 -0.0,1920.0 -0.0,626.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[836.0,444.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.34087,41.602038]}},{"type":"Feature","properties":{"resourceCoords":[336.0,1455.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.342065,41.600189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p50","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0050","type":"ImageService3","width":1656,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"358.4,1689.2 363.4,164.7 301.6,0.0 1357.5,0.0 1357.0,1781.0 737.8,1780.1 358.4,1689.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0050/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[857.0,782.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.353336,41.6001195]}},{"type":"Feature","properties":{"resourceCoords":[1357.0,1781.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3521271,41.5983169]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0051/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p51","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0051/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0051","type":"ImageService3","width":1650,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"302.2,1842.0 306.6,0.0 1268.3,0.0 1213.8,424.2 1650.0,422.2 1650.0,833.7 1322.9,835.9 1331.0,1838.6 302.2,1842.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0051/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[822.0,839.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3508799,41.6001289]}},{"type":"Feature","properties":{"resourceCoords":[303.0,839.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3521317,41.6001264]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0052/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p52","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0052/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0052","type":"ImageService3","width":1656,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"354.0,837.0 681.3,836.8 683.8,425.0 247.3,424.4 292.4,0.0 1357.4,0.0 1357.4,1920.0 356.2,1920.0 354.0,837.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0052/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[857.0,837.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3484594,41.6001448]}},{"type":"Feature","properties":{"resourceCoords":[354.0,837.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3496718,41.600137]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0053/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p53","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0053/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0053","type":"ImageService3","width":1650,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1380.8,1833.9 263.0,1832.0 267.9,0.0 1381.7,0.0 1380.8,1833.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0053/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[803.0,1832.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3459278,41.5983517]}},{"type":"Feature","properties":{"resourceCoords":[263.0,1832.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3472317,41.5983405]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p54","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0054/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0054","type":"ImageService3","width":1656,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"349.6,0.0 1380.9,0.0 1381.0,832.0 1040.1,831.6 1044.0,1299.4 1040.1,1764.2 355.0,1768.9 349.6,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0054/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1381.0,832.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.342065,41.600189]}},{"type":"Feature","properties":{"resourceCoords":[1381.0,1827.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3420454,41.5983856]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0055/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p55","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0055/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0055","type":"ImageService3","width":1650,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"765.0,211.2 1302.2,79.6 1296.9,1100.5 1650.0,1168.2 1650.0,1920.0 -0.0,1920.0 -0.0,289.0 302.4,289.4 302.4,252.1 765.0,211.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0055/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[809.0,1010.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3557304,41.5967884]}},{"type":"Feature","properties":{"resourceCoords":[809.0,202.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.355736,41.598257]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p56","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0056/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0056","type":"ImageService3","width":1677,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1086.0,1190.9 1090.9,1920.0 711.0,1920.0 713.2,1184.5 355.3,1114.7 363.9,79.2 745.9,172.8 1370.0,177.0 1369.1,1192.8 1086.0,1190.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0056/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[869.0,177.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3533271,41.5983116]}},{"type":"Feature","properties":{"resourceCoords":[1370.0,177.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3521271,41.5983169]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0057/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p57","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0057/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0057","type":"ImageService3","width":1650,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1106.3 282.4,1110.0 290.0,104.0 1323.4,110.9 1320.0,1115.8 967.3,1115.4 966.0,1920.0 -0.0,1920.0 -0.0,1106.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0057/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35282663887918,41.59849820623714]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34886490447475,41.59853603424881]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34880645629433,41.59506417232566]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35276819069875,41.595026344313986]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p58","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0058","type":"ImageService3","width":1677,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1356.5,1920.0 -0.0,1920.0 -0.0,1094.3 355.0,1094.0 356.7,155.7 1368.3,158.1 1356.5,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0058/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[859.0,1094.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3484211,41.5965208]}},{"type":"Feature","properties":{"resourceCoords":[355.0,1094.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3496233,41.5965109]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0059/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p59","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0059/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0059","type":"ImageService3","width":1650,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1888.5 250.9,1887.5 257.0,78.0 1369.5,75.3 1362.6,1074.2 1021.8,1076.7 1028.1,1920.0 -0.0,1920.0 -0.0,1888.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0059/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[257.0,1074.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3472139,41.5965332]}},{"type":"Feature","properties":{"resourceCoords":[257.0,78.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3472317,41.5983405]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p6","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0006","type":"ImageService3","width":1647,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1091.0,1443.0 593.1,1442.0 591.0,430.0 1089.0,427.6 1091.0,1443.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[591.0,430.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3396766,41.6020397]}},{"type":"Feature","properties":{"resourceCoords":[1091.0,1443.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3384449,41.600208]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p60","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0060/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0060","type":"ImageService3","width":1677,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1374.0,1067.0 1385.0,1920.0 -0.0,1920.0 -0.0,1063.0 341.0,1063.0 356.0,0.0 1040.7,0.0 1040.3,65.5 1034.0,65.5 1027.5,1065.3 1374.0,1067.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0060/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[341.0,1063.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3445314,41.5965477]}},{"type":"Feature","properties":{"resourceCoords":[1381.0,65.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3420454,41.5983856]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p61","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0061/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0061","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"48.6,0.0 45.1,163.1 1066.8,171.1 1066.3,216.8 1660.0,228.9 1660.0,695.3 1287.8,674.4 1276.5,1056.0 1194.0,1052.6 1180.3,1681.5 1091.2,1706.0 281.5,1676.0 279.4,1920.0 -0.0,1917.5 -0.0,-0.0 48.6,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0061/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35792588058803,41.59571791889529]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3499362076983,41.59586443361738]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34971120678358,41.58890438517663]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3577008796733,41.58875787045454]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0062/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p62","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0062/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0062","type":"ImageService3","width":1677,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"190.4,1035.7 941.8,1047.4 903.4,101.1 1406.3,87.3 1422.5,1054.9 1521.5,1056.4 1535.5,1812.6 199.0,1811.0 190.4,1035.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0062/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1082.0,1811.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.34955,41.5919765]}},{"type":"Feature","properties":{"resourceCoords":[199.0,1811.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3516581,41.5920024]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0063/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p63","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0063/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0063","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1049.7 -0.0,95.1 1660.0,114.3 1660.0,1826.0 99.6,1798.9 98.3,1052.9 -0.0,1049.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0063/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34870814038439,41.59521674955696]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34471835503982,41.59521757321574]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34471709013314,41.59174201426216]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34870687547772,41.59174119060338]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0064/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p64","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0064/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0064","type":"ImageService3","width":1677,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"305.4,1788.6 326.4,86.2 1472.3,108.5 1547.3,272.7 1559.3,1823.1 305.4,1788.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0064/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34550949096123,41.59515990391061]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34145773878474,41.59519826454589]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3413994249325,41.59170450296324]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.345451177109,41.59166614232796]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0065/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p65","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0065/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0065","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1578.7 -0.0,307.8 1495.3,338.0 1494.7,1508.2 1660.0,1495.3 1660.0,1920.0 1149.0,1920.0 1143.5,1514.7 -0.0,1578.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0065/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1052.0,1516.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3495239,41.5898432]}},{"type":"Feature","properties":{"resourceCoords":[609.0,320.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3505945,41.5919885]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0066/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p66","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0066/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0066","type":"ImageService3","width":1677,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"300.2,1896.5 302.8,1471.6 137.3,1483.5 145.2,312.8 1539.5,349.3 1541.9,1347.9 576.8,1452.0 575.8,1749.4 539.8,1920.0 300.2,1896.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0066/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1067.0,1379.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3462338,41.5900622]}},{"type":"Feature","properties":{"resourceCoords":[1067.0,337.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3462557,41.5919315]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0067/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p67","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0067/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0067","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1528.7,472.4 1531.8,1455.1 118.0,1429.8 113.0,442.5 1528.7,472.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0067/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[587.0,1439.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3439573,41.5901138]}},{"type":"Feature","properties":{"resourceCoords":[587.0,454.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3439718,41.5919012]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0068/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p68","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0068/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0068","type":"ImageService3","width":1677,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1564.0,1818.0 148.0,1781.8 151.3,76.0 1569.0,110.0 1564.0,1818.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0068/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1091.0,1418.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3427824,41.5877178]}},{"type":"Feature","properties":{"resourceCoords":[1569.0,110.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3416647,41.590095]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p69","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0069/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0069","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1920.0 -0.0,452.6 188.4,457.8 188.5,206.7 999.7,230.2 1250.1,167.3 1660.0,181.2 1660.0,752.4 1447.0,745.0 1439.7,1749.1 1660.0,1754.0 1660.0,1920.0 683.5,1920.0 685.4,1728.2 182.2,1714.3 180.3,1920.0 -0.0,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0069/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35729681941405,41.590404475605865]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34931856373147,41.59050253075394]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34916799395329,41.583551858337714]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35714624963586,41.58345380318964]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p7","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0007","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1124.0,1466.0 579.0,1466.0 582.8,444.3 1126.8,447.1 1124.0,1466.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[579.0,1466.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3384449,41.600208]}},{"type":"Feature","properties":{"resourceCoords":[1124.0,1466.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3371305,41.6002208]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p70","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0070/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0070","type":"ImageService3","width":1677,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"453.4,368.2 829.1,386.4 848.2,301.9 850.7,154.0 1334.5,108.7 1322.2,1249.4 1274.4,1268.9 1264.8,1849.0 1677.0,1855.8 1677.0,1920.0 475.8,1920.0 444.7,1911.0 445.6,1744.5 224.7,1738.3 237.7,731.0 451.3,739.6 453.4,368.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0070/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35149943370978,41.590411801856156]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3434660413494,41.59054473098373]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34326398943912,41.58361697623384]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3512973817995,41.58348404710627]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0071/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p71","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0071/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0071","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1153.2,1920.0 -0.0,1920.0 -0.0,765.3 94.6,725.0 89.8,156.8 1513.0,183.4 1519.2,1795.4 1152.2,1788.7 1153.2,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0071/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34527119782751,41.5873220933125]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34127490503502,41.58733864611739]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34124948772232,41.583856992634296]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34524578051482,41.58384043982941]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0072/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p72","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0072/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0072","type":"ImageService3","width":1677,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,408.3 107.7,408.4 109.9,201.8 615.3,216.5 613.2,409.1 1180.2,409.8 1173.6,1518.2 1111.6,1518.3 1108.8,1920.0 96.4,1920.0 97.6,1713.2 597.9,1721.0 604.6,1519.4 -0.0,1520.7 -0.0,408.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0072/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3568291074828,41.5849295168328]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34880650907675,41.585035959199026]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3486447307606,41.57811692312824]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35666732916664,41.57801048076202]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0073/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p73","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0073/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0073","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1197.4,351.5 1168.2,915.5 1424.3,920.4 1519.8,1003.4 1531.8,1150.3 1660.0,1153.5 1660.0,1906.9 1447.2,1899.1 1450.2,1417.4 -0.0,1436.7 -0.0,288.8 1103.5,288.8 1104.2,358.1 1197.4,351.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0073/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35116500593232,41.58457251371628]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3431904662642,41.58464274669729]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3430826288799,41.57769468508093]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35105716854801,41.57762445209992]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0074/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p74","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0074/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0074","type":"ImageService3","width":1677,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1323.3,165.6 1318.5,1083.1 1390.9,1083.5 1385.2,1675.9 911.9,1660.2 910.2,1905.8 539.8,1888.9 546.6,1138.2 418.9,1133.9 408.3,987.3 313.9,903.8 58.7,896.5 92.9,334.9 -0.0,340.6 -0.0,271.5 536.0,270.9 535.9,207.1 702.0,209.6 702.5,144.1 1323.3,165.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0074/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3458745576812,41.58456012523057]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33779091713197,41.58468667154241]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33759858461417,41.5777149488979]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3456822251634,41.57758840258606]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0075/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p75","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0075/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0075","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1428.5,1718.2 -0.0,1675.4 -0.0,678.7 -0.0,675.0 -0.0,-0.0 1458.3,0.0 1428.5,1718.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0075/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35114082285186,41.57937254697848]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34314797585479,41.579522837926184]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34291723411955,41.57255826565157]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35091008111662,41.57240797470387]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0076/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p76","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"26"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0076/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0076","type":"ImageService3","width":1675,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1384.0,1720.9 329.2,1704.1 332.4,463.5 912.7,484.4 912.0,238.0 1383.6,249.1 1384.0,1720.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0076/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[913.0,1222.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3412557,41.575038]}},{"type":"Feature","properties":{"resourceCoords":[912.0,238.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3413128,41.5786007]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0077/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p77","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0077/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0077","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 709.5,0.0 708.1,182.1 695.0,204.3 206.8,190.9 205.1,395.8 1208.1,397.9 1211.8,0.0 1273.2,0.0 1272.8,43.8 1261.1,43.8 1269.9,1714.8 194.2,1686.2 206.6,1920.0 -0.0,1920.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0077/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3572341600239,41.57944169202942]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34921898676535,41.579560530520176]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34903653376409,41.57257651313275]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35705170702265,41.572457674641996]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0078/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p78","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"24"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0078/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0078","type":"ImageService3","width":1675,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"197.9,344.8 180.6,111.2 1553.5,118.2 1543.5,1116.8 1562.4,1135.7 1675.0,1136.8 1675.0,1920.0 -0.0,1920.0 -0.0,349.0 197.9,344.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0078/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[929.0,115.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3524966,41.5733032]}},{"type":"Feature","properties":{"resourceCoords":[861.0,789.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3528334,41.570852]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0079/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p79","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0079/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0079","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"307.0,1131.3 193.0,1127.3 174.3,1107.9 209.4,104.4 1453.1,132.9 1434.8,1130.4 1660.0,1138.3 1660.0,1632.7 1269.8,1612.7 1266.2,1920.0 287.4,1918.4 307.0,1131.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0079/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35047614180549,41.573647716027665]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34250676081243,41.573785408606305]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34229537987869,41.566840674983524]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.35026476087175,41.566702982404884]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p8","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"9"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0008","type":"ImageService3","width":1647,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1348.8,1448.9 303.0,1442.0 305.4,424.2 1352.6,430.9 1348.8,1448.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[851.0,426.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3358385,41.6020678]}},{"type":"Feature","properties":{"resourceCoords":[303.0,1442.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3371305,41.6002208]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0080/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p80","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0080/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0080","type":"ImageService3","width":1675,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"167.5,96.6 1119.6,117.8 1118.6,628.6 1577.8,629.1 1563.2,778.0 1563.5,1920.0 -0.0,1920.0 -0.0,1590.4 393.6,1605.3 387.8,1107.6 160.8,1102.3 167.5,96.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0080/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.34428859264926,41.57362748379327]}},{"type":"Feature","properties":{"resourceCoords":[1675.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33630978577094,41.57369562659822]}},{"type":"Feature","properties":{"resourceCoords":[1675.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33620611223067,41.56680493416898]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.344184919109,41.56673679136402]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0081/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p81","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0081/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0081","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"111.5,440.6 1527.5,462.0 1528.1,1453.4 111.8,1455.3 111.5,440.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0081/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[583.0,449.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3378097,41.5732429]}},{"type":"Feature","properties":{"resourceCoords":[583.0,1465.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3377875,41.571407]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0082/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p82","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"17"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0082/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0082","type":"ImageService3","width":1675,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"141.8,745.8 156.4,598.8 409.1,600.1 410.6,109.6 1575.8,113.8 1576.8,467.9 1675.0,468.2 1675.0,1920.0 -0.0,1920.0 -0.0,1867.8 140.4,1868.0 141.8,745.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0082/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[641.0,1092.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3343415,41.5696578]}},{"type":"Feature","properties":{"resourceCoords":[1344.0,113.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.33097,41.5732659]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0083/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p83","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"20"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0083/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0083","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"300.3,338.2 301.5,189.9 702.6,500.8 1087.0,504.7 1112.0,513.4 1171.4,598.5 1172.1,626.3 1350.7,623.0 1350.0,661.1 1450.9,662.9 1419.8,711.3 1395.8,1783.8 215.7,1770.2 227.8,337.6 300.3,338.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0083/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[930.0,1285.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3321327,41.5750373]}},{"type":"Feature","properties":{"resourceCoords":[229.0,289.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3356105,41.5785762]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0084/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p84","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"20"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0084/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0084","type":"ImageService3","width":1675,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"253.1,436.2 289.3,454.4 1675.0,461.6 1675.0,1920.0 203.2,1920.0 212.9,500.4 253.1,436.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0084/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1249.0,631.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3247869,41.576703]}},{"type":"Feature","properties":{"resourceCoords":[1249.0,141.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3248093,41.5784845]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0085/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p85","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0085/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0085","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"659.6,1793.8 188.1,1428.2 193.9,1094.5 337.2,1085.2 211.9,980.9 224.0,83.7 1450.5,121.4 1432.7,1915.6 1128.2,1920.0 1115.0,1862.8 1043.7,1799.0 659.6,1793.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0085/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3366977469659,41.58430767302091]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.32869037369343,41.584453688929734]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.32846617824111,41.57747699400905]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33647355151358,41.57733097810022]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0086/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p86","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"23"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0086/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0086","type":"ImageService3","width":1666,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"104.5,86.5 845.9,97.4 845.9,97.3 1092.5,101.0 1093.1,202.8 1666.0,196.9 1666.0,1920.0 141.8,1920.0 109.7,1904.1 99.9,1920.0 -0.0,1920.0 -0.0,1882.3 124.9,1877.8 120.2,1468.3 116.0,1468.4 104.5,86.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0086/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[849.0,599.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.326056,41.5821359]}},{"type":"Feature","properties":{"resourceCoords":[1099.0,1103.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3248323,41.5803036]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0087/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p87","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0087/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0087","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"305.7,1829.7 314.2,165.6 1071.3,181.2 1069.9,328.6 1121.7,329.6 1128.2,0.0 1660.0,0.0 1660.0,33.6 1183.1,33.7 1183.3,473.3 1315.6,476.4 1314.6,750.3 1183.4,747.2 1183.5,1041.0 1312.1,1044.1 1309.8,1851.7 305.7,1829.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0087/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33369052395972,41.59059575814933]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.32573623033515,41.59067162100741]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.32561973783285,41.58374184613204]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33357403145742,41.58366598327396]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0088__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p88 [1]","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"28"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6664.0"},{"label":"split_canvas_h","value":"7680.0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0088__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0088","type":"ImageService3","width":1666,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"124.2,1805.7 623.0,1818.0 622.6,1920.0 1666.0,1920.0 1666.0,385.7 914.0,385.8 913.3,0.0 0.0,-0.0 -0.0,436.6 130.5,439.8 129.4,711.8 -0.0,708.6 -0.0,1000.5 126.8,1003.6 124.2,1805.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0088__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[871.0,1020.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3237234,41.5868629]}},{"type":"Feature","properties":{"resourceCoords":[623.0,1818.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3248778,41.5839515]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0089/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p89","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0089/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0089","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1458.5,1770.7 151.3,1754.4 160.2,416.3 -0.0,368.2 -0.0,-0.0 1660.0,0.0 1660.0,889.6 1577.8,864.2 1440.0,862.5 1473.8,872.8 1458.5,1770.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0089/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33058037951851,41.60481016263621]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.3225782089053,41.60493649191398]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.32238417913594,41.5979665407713]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.33038634974915,41.59784021149353]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p9","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0009","type":"ImageService3","width":1649,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3.9,938.9 342.1,938.5 342.1,709.2 342.1,524.9 342.0,470.0 1340.2,470.3 1349.4,1468.4 -0.0,1470.8 3.9,938.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[342.0,1468.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3420454,41.5983856]}},{"type":"Feature","properties":{"resourceCoords":[342.0,470.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.342065,41.600189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0090/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p90","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0090/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0090","type":"ImageService3","width":1666,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"348.2,1408.8 274.7,1409.0 252.6,1409.0 257.7,9.8 224.1,0.0 361.1,0.0 383.8,6.8 443.0,24.4 442.7,0.0 1666.0,0.0 1666.0,1920.0 -0.0,1920.0 -0.0,1853.8 348.1,1853.8 348.2,1408.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0090/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[999.0,1409.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3197323,41.5967023]}},{"type":"Feature","properties":{"resourceCoords":[504.0,1409.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3221359,41.5966865]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0091/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gary, Indiana | 1951 | sanborn02345_008 p91","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"16"}],"created":"2026-09-21T15:23:59Z","modified":"2026-09-21T15:23:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0091/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0091","type":"ImageService3","width":1660,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"140.9,1545.4 -0.0,1548.3 -0.0,1467.8 131.5,1465.5 121.9,284.9 135.3,284.6 128.7,-0.0 1660.0,-0.0 1660.0,51.2 1513.6,52.6 1512.9,622.1 1448.3,623.3 1463.4,1455.6 1511.9,1454.7 1511.7,1639.3 1026.8,1647.0 1024.6,1800.8 161.4,1815.9 161.5,1920.0 133.8,1920.0 140.9,1545.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094gm:g4094gm_g02345195101:02345_01_1951-0091/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1513.0,551.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3309667,41.5900052]}},{"type":"Feature","properties":{"resourceCoords":[1026.0,1529.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.3357003,41.5917987]}}]}}]}