{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01925_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Highland Park, Illinois | 1907 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"23"},{"label":"placed","value":"3"},{"label":"unplaced","value":"20"},{"label":"fit sources","value":"georef 3"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"4 sheet(s) cut into 20 panels"},{"label":"unplaced pages","value":"p1__1 (tier 3, 42.18708,-87.79655 +/-523m); p2 (tier 3, 42.18667,-87.80254 +/-523m); p3 (tier 3, 42.18343,-87.80049 +/-523m); p4 (tier 3, 42.17700,-87.79680 +/-523m); p5__1 (tier 3, 42.18804,-87.79996 +/-815m); p5__2 (tier 3, 42.18804,-87.79996 +/-815m); p5__4 (tier 3, 42.18804,-87.79996 +/-815m); p6__1 (tier 3, 42.18834,-87.79628 +/-1822m); p6__10 (tier 3, 42.18834,-87.79628 +/-1822m); p6__11 (tier 3, 42.18834,-87.79628 +/-1822m); p6__2 (tier 3, 42.18834,-87.79628 +/-1822m); p6__3 (tier 3, 42.18834,-87.79628 +/-1822m); p6__4 (tier 3, 42.18834,-87.79628 +/-1822m); p6__5 (tier 3, 42.18834,-87.79628 +/-1822m); p6__8 (tier 3, 42.18834,-87.79628 +/-1822m); p6__9 (tier 3, 42.18834,-87.79628 +/-1822m); p7__1 (tier 3, 42.19359,-87.81018 +/-523m); p7__2 (tier 3, 42.19359,-87.81018 +/-523m); p7__3 (tier 3, 42.19359,-87.81018 +/-523m); p7__4 (tier 3, 42.19359,-87.81018 +/-523m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019251907:01925_1907-0005__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Highland Park, Illinois | 1907 | sanborn01925_002 p5 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.33"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4838.0"},{"label":"split_canvas_w","value":"4468.0"},{"label":"split_canvas_h","value":"2814.0"}],"created":"2026-10-18T18:06:07Z","modified":"2026-10-18T18:06:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019251907:01925_1907-0005__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019251907:01925_1907-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"61.2,1878.3 1079.9,1887.5 1031.7,1580.7 1067.4,1232.2 872.0,1231.7 781.2,1287.3 55.6,1278.7 20.3,1480.8 61.2,1878.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019251907:01925_1907-0005__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[142.0,1842.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.795816,42.18147]}},{"type":"Feature","properties":{"resourceCoords":[1053.0,1842.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.793439,42.181474]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019251907:01925_1907-0006__6/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Highland Park, Illinois | 1907 | sanborn01925_002 p6 [6]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.69"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2732.4"},{"label":"split_canvas_w","value":"1614.4"},{"label":"split_canvas_h","value":"2363.6"}],"created":"2026-10-18T18:06:07Z","modified":"2026-10-18T18:06:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019251907:01925_1907-0006__6/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019251907:01925_1907-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"374.7,1225.8 379.1,772.2 336.1,710.4 15.8,703.2 27.6,1261.1 374.7,1225.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019251907:01925_1907-0006__6/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,683.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.79798503088281,42.18985827971751]}},{"type":"Feature","properties":{"resourceCoords":[403.6,683.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.79692899136641,42.18984184742313]}},{"type":"Feature","properties":{"resourceCoords":[403.6,1274.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.79696148782982,42.188699088796405]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1274.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.79801752734622,42.188715521090785]}},{"type":"Feature","properties":{"resourceCoords":[78.9,1183.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.797806,42.188889]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019251907:01925_1907-0006__7/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Highland Park, Illinois | 1907 | sanborn01925_002 p6 [7]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1591.6"},{"label":"split_canvas_y","value":"2732.4"},{"label":"split_canvas_w","value":"1703.6"},{"label":"split_canvas_h","value":"2363.6"}],"created":"2026-10-18T18:06:07Z","modified":"2026-10-18T18:06:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019251907:01925_1907-0006__7/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019251907:01925_1907-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"797.5,702.5 618.1,768.5 587.4,752.7 596.3,713.1 423.9,786.0 417.6,1211.5 792.9,1218.8 797.5,702.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019251907:01925_1907-0006__7/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[397.9,683.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.80119439088982,42.19330222733022]}},{"type":"Feature","properties":{"resourceCoords":[823.8,683.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.80007816311034,42.19328741006655]}},{"type":"Feature","properties":{"resourceCoords":[823.8,1274.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.80010588733387,42.19214458263691]}},{"type":"Feature","properties":{"resourceCoords":[397.9,1274.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.80122211511335,42.192159399900575]}},{"type":"Feature","properties":{"resourceCoords":[779.9,1212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.800218,42.192266]}}]}}]}