{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01822_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Deerfield, Illinois | 1929 | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"7"},{"label":"placed","value":"2"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1 (tier 4, 42.16621,-87.84438 +/-173m); p2__1 (tier 1, 42.16775,-87.84715 +/-270m); p2__2 (tier 1, 42.16520,-87.85026 +/-100m); p4 (tier 1, 42.41524,-88.07681 +/-253m); p5__2 (tier 4, 42.16621,-87.84438 +/-173m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018221929:01822_1929-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Deerfield, Illinois | 1929 | sanborn01822_001 p3","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"}],"created":"2026-09-23T14:49:44Z","modified":"2026-09-23T14:49:44Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018221929:01822_1929-0003/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018221929:01822_1929-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1217.4,6613.6 287.7,6396.3 124.0,7652.0 -0.0,7652.0 -0.0,-0.0 6452.0,0.0 6452.0,7652.0 1645.0,7652.0 1217.4,6613.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018221929:01822_1929-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2656.0,588.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.844622,42.169249]}},{"type":"Feature","properties":{"resourceCoords":[4748.0,4840.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.8433538,42.1672909]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018221929:01822_1929-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Deerfield, Illinois | 1929 | sanborn01822_001 p5 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T14:49:44Z","modified":"2026-09-23T14:49:44Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018221929:01822_1929-0005__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018221929:01822_1929-0005/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,7652.0 6452.0,3144.8 4150.0,3135.6 4153.7,724.7 1508.3,1069.6 917.9,0.0 -0.0,-0.0 -0.0,7652.0 6452.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018221929:01822_1929-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.84612642204831,42.16659921475299]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.84216922649172,42.16618636125366]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.84283115023527,42.162714704909085]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.84678834579186,42.16312755840842]}},{"type":"Feature","properties":{"resourceCoords":[5356.0,2580.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.843064,42.165086]}}]}}]}