{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01817_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"De Kalb, Illinois | 1897 | 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":"18"},{"label":"placed","value":"12"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef-snap 7, georef 5"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"4 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p10__1 (tier 1, 41.93525,-88.75114 +/-100m); p11__2 (tier 1, 41.92768,-88.75740 +/-216m); p11__3 (tier 1, 41.92680,-88.75845 +/-134m); p12__1 (tier 1, 41.93024,-88.75802 +/-148m); p1__1 (tier 3, 41.93188,-88.74664 +/-671m); p1__2 (tier 3, 41.93188,-88.74664 +/-671m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0010__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Kalb, Illinois | 1897 | sanborn01817_003 p10 [2]","metadata":[{"label":"streets","value":"5"},{"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":"2026-09-23T01:07:50Z","modified":"2026-09-23T01:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0010__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0010/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"133.7,0.0 0.0,-0.0 0.0,5884.8 899.6,5878.8 3182.8,5858.0 3183.2,7652.0 4444.0,7652.0 5572.0,7652.0 6452.0,7652.0 6452.0,0.0 127.5,229.3 133.7,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0010__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74246319386941,41.9265857624711]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74103455553643,41.92938399949462]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.73657514077244,41.928123071940256]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.73800377910543,41.92532483491674]}},{"type":"Feature","properties":{"resourceCoords":[3436.0,2324.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.740348,41.927693]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0011__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Kalb, Illinois | 1897 | sanborn01817_003 p11 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4636.0"},{"label":"split_canvas_h","value":"3553.6"}],"created":"2026-09-23T01:07:50Z","modified":"2026-09-23T01:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0011__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0011/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 -0.0,3553.6 3449.6,3540.4 3930.0,3538.8 4636.0,0.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0011__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[320.0,3341.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.759015,41.927472]}},{"type":"Feature","properties":{"resourceCoords":[3620.0,1452.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.756782,41.928342]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0012__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Kalb, Illinois | 1897 | sanborn01817_003 p12 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"2480.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3971.6"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T01:07:50Z","modified":"2026-09-23T01:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0012__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0012/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5125.2,7652.0 6312.0,7524.0 6452.0,6740.8 6452.0,0.0 4844.8,0.0 4856.8,1497.2 2499.2,1707.6 2494.4,3134.4 2483.0,6798.4 4837.0,6297.4 5125.2,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0012__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[2480.4,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.75653687731626,41.932139624632896]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.75413587235217,41.931688807501104]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.75530289396579,41.92824652893047]}},{"type":"Feature","properties":{"resourceCoords":[2480.4,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.75770389892989,41.928697346062265]}},{"type":"Feature","properties":{"resourceCoords":[6312.0,7524.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.755368,41.92832]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0012__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Kalb, Illinois | 1897 | sanborn01817_003 p12 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3124.8"},{"label":"split_canvas_w","value":"2494.4"},{"label":"split_canvas_h","value":"4527.2"}],"created":"2026-09-23T01:07:50Z","modified":"2026-09-23T01:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0012__3/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0012/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1908.0,7652.0 2480.4,7652.0 2494.4,3134.4 0.0,3124.8 -0.0,7652.0 1908.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0012__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2370.5,5540.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.7443193,41.925462]}},{"type":"Feature","properties":{"resourceCoords":[259.8,3268.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.745137,41.926868]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Kalb, Illinois | 1897 | sanborn01817_003 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:07:50Z","modified":"2026-09-23T01:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0002/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,7277.7 0.0,4912.8 748.7,4910.6 781.0,0.0 6452.0,0.0 6452.0,7059.3 6304.5,7060.5 6301.0,7226.2 0.0,7277.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.75344744879445,41.93208637473482]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.7519541431823,41.93485170271641]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74757648407011,41.93352487476901]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74906978968225,41.93075954678743]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Kalb, Illinois | 1897 | sanborn01817_003 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:07:50Z","modified":"2026-09-23T01:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0003/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,5003.4 5703.1,5010.5 5718.6,7376.2 0.0,7413.7 0.0,29.8 6452.0,0.0 6452.0,5003.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.7548356267988,41.929680093680204]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.75331863772178,41.93243717937364]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74895419413173,41.9310892565129]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.75047118320875,41.92833217081946]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Kalb, Illinois | 1897 | sanborn01817_003 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:07:50Z","modified":"2026-09-23T01:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0004/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"730.0,174.5 6257.0,166.7 6261.8,0.0 6452.0,0.0 6452.0,7652.0 2101.1,7652.0 2105.1,7294.1 0.0,7326.1 0.0,4906.1 663.7,4916.9 730.0,174.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74936121249425,41.930888134352635]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74790612735889,41.933645487177586]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74354117460645,41.932352594715724]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74499625974181,41.92959524189077]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Kalb, Illinois | 1897 | sanborn01817_003 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:07:50Z","modified":"2026-09-23T01:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0005/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0005/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,7652.0 0.0,7353.0 245.3,7343.4 192.3,247.2 6452.0,207.5 6452.0,4933.6 5790.5,4932.0 5824.2,7343.3 1476.8,7351.8 1477.6,7652.0 0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.75072674919912,41.92845539043062]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74921510840196,41.93120703562123]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74485935914628,41.929863839676536]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74637099994344,41.92711219448593]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Kalb, Illinois | 1897 | sanborn01817_003 p6","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-23T01:07:50Z","modified":"2026-09-23T01:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0006/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0006/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 2876.5,0.0 2998.8,316.2 6056.4,303.8 6029.2,7387.0 0.0,7389.3 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3948.0,2668.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.7537983,41.928313]}},{"type":"Feature","properties":{"resourceCoords":[3948.0,5052.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.7524333,41.927896]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Kalb, Illinois | 1897 | sanborn01817_003 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:07:50Z","modified":"2026-09-23T01:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0007/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0007/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,7652.0 0.0,-0.0 6093.7,0.0 6104.1,7652.0 0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.7576180683399,41.924467214997776]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.75612456511418,41.927237451188766]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.7517396589264,41.92591028942005]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.75323316215211,41.92314005322906]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Kalb, Illinois | 1897 | sanborn01817_003 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:07:50Z","modified":"2026-09-23T01:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0008/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0008/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6230.4,256.0 6282.9,7306.4 6039.2,7316.0 6039.1,7613.0 0.0,7652.0 0.0,248.4 6230.4,256.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.75215674043874,41.925864681926356]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.75063544234978,41.92863436424807]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74625131719766,41.9272825328145]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74777261528662,41.92451285049279]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"De Kalb, Illinois | 1897 | sanborn01817_003 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:07:50Z","modified":"2026-09-23T01:07:50Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0009/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0009/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,304.5 6367.2,6823.5 0.0,7197.9 0.0,356.1 6452.0,304.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104dm:g018171897:01817_1897-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74639863382517,41.927856720396356]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74489903125448,41.93060839492074]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74054327341672,41.929275884181685]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.74204287598741,41.9265242096573]}}]}}]}