{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01893_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Glen Ellyn, Illinois | 1929 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"18"},{"label":"placed","value":"15"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 10, georef-snap 5"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"4 sheet(s) cut into 11 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 41.87813,-88.05601 +/-128m); p1__2 (tier 1, 41.87779,-88.05526 +/-126m); p4__2 (tier 1, 41.87872,-88.06384 +/-100m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0010/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0010/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7652.0 -0.0,-0.0 5790.6,0.0 5806.4,6355.0 6360.7,6358.7 6379.6,7473.2 3639.7,7495.7 3564.2,7509.5 3565.8,7652.0 -0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07669562867973,41.885520832400786]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06888198653822,41.88552579952789]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06887412956112,41.87857772435072]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07668777170264,41.878572757223615]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0011/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0011/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"231.2,56.0 -0.0,-0.0 1390.1,0.0 1384.5,556.9 6269.4,571.4 5785.6,2581.3 6452.0,2687.5 6452.0,4324.2 6356.4,4356.0 6172.9,4813.3 5055.7,4828.3 5882.8,7281.7 4852.4,7292.1 4840.4,7454.5 759.4,7463.1 748.9,6358.9 199.9,6351.2 231.2,56.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06996625306662,41.88557489937654]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06207863053434,41.88562411674102]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06200077872107,41.878610259113415]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06988840125335,41.87856104174894]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p1 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"3844.8"},{"label":"split_canvas_y","value":"5790.8"},{"label":"split_canvas_w","value":"2607.2"},{"label":"split_canvas_h","value":"1861.2"}],"created":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0001__3/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,5790.8 3862.4,5811.2 3844.8,7412.4 3844.8,7644.1 4014.7,7576.6 4016.3,7652.0 6452.0,7652.0 6452.0,5790.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[3844.8,5790.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05733435087001,41.87847399915351]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,5790.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05410652167787,41.87841145596119]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05416651989727,41.8766926420109]}},{"type":"Feature","properties":{"resourceCoords":[3844.8,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.0573943490894,41.87675518520322]}},{"type":"Feature","properties":{"resourceCoords":[6200.1,5503.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0544091,41.8786843]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0002/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,327.3 5759.2,345.8 5758.5,2501.1 6117.2,4386.6 6452.0,4750.5 5439.2,5047.4 5451.1,7492.7 635.2,7442.3 689.3,3545.9 439.5,3597.4 399.9,5402.9 -0.0,5402.9 -0.0,327.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5760.0,2500.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0651262,41.8777728]}},{"type":"Feature","properties":{"resourceCoords":[416.0,7440.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.068404,41.875454]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p3","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0003/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2945.7,7430.3 168.0,7424.0 115.2,239.1 6020.6,256.0 6090.5,7652.0 2946.5,7652.0 2945.7,7430.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[168.0,7424.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.068344,41.872153]}},{"type":"Feature","properties":{"resourceCoords":[6052.0,3312.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.064729,41.874059]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p4 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"13"},{"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":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0004__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4580.2,7478.0 3667.9,4132.0 3894.9,4137.1 3894.4,4134.8 6452.0,3424.4 6452.0,2665.9 5291.3,3041.8 4873.5,1810.6 3371.6,1784.4 2470.8,0.0 2242.6,0.0 2215.8,319.8 341.3,304.4 330.0,2448.3 677.7,4325.7 858.5,4579.1 1173.6,4596.3 -0.0,4979.7 -0.0,7412.1 4580.2,7478.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[332.0,2448.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0651262,41.8777728]}},{"type":"Feature","properties":{"resourceCoords":[824.0,7424.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.06476,41.875463]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0004__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p4 [3]","metadata":[{"label":"streets","value":"1"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"3894.4"},{"label":"split_canvas_y","value":"3424.4"},{"label":"split_canvas_w","value":"2557.6"},{"label":"split_canvas_h","value":"4227.6"}],"created":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0004__3/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,7652.0 6452.0,3424.4 3894.4,4134.8 4699.2,7652.0 6452.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0004__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[3894.4,3424.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06375143211197,41.88122024700163]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,3424.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.0607545333853,41.88198886092432]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05905071517195,41.87830123308947]}},{"type":"Feature","properties":{"resourceCoords":[3894.4,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06204761389861,41.877532619166786]}},{"type":"Feature","properties":{"resourceCoords":[4801.5,7304.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0611272,41.8781087]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0005/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0005/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,378.2 5715.4,323.8 5786.2,5381.3 6187.4,5375.8 6202.0,3576.2 6452.0,3521.4 6452.0,7404.7 -0.0,7427.6 -0.0,378.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07226188729318,41.878893210582646]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06826662060097,41.87889244607854]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06826782979583,41.87533948451818]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07226309648804,41.87534024902229]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0006/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0006/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7458.3 -0.0,251.6 6194.6,252.1 6268.3,7457.9 -0.0,7458.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07218900283469,41.87555982970941]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06824728847248,41.87556988274439]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06823138868317,41.87206436492464]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07217310304539,41.87205431188966]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0007/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0007/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"389.0,7652.0 292.6,1693.1 2201.7,1677.7 1700.1,0.0 6285.2,0.0 6279.4,260.1 6452.0,196.1 6452.0,7652.0 389.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06511160659483,41.87702466615765]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05718066972715,41.87700153400189]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05721725513249,41.869948208361656]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06514819200017,41.86997134051742]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p8 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5672.0"},{"label":"split_canvas_w","value":"3485.6"},{"label":"split_canvas_h","value":"1980.0"}],"created":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0008__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0008/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3485.5,7398.3 3485.2,5672.0 228.0,5688.8 244.1,7456.0 3409.6,7456.0 3485.5,7398.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[244.1,7456.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.064606,41.867495]}},{"type":"Feature","properties":{"resourceCoords":[3409.6,7456.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0607278,41.867527]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0008__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p8 [2]","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"30"},{"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":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0008__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0008/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,5690.0 3485.2,5672.0 3485.6,7652.0 5914.9,7652.0 5939.6,5886.7 6168.3,5345.3 6125.4,3574.6 6452.0,3569.7 6452.0,2653.7 6105.8,2653.8 6081.6,375.2 4510.5,391.1 4509.0,280.4 -0.0,314.5 0.0,5690.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0008__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[6140.0,3728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.064633,41.8689821]}},{"type":"Feature","properties":{"resourceCoords":[364.0,312.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.071748,41.872144]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0009__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p9 [1]","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"23"},{"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":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0009__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0009/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5028.2,4176.5 4568.6,6180.3 4761.7,6199.6 5227.8,6279.8 5240.4,7652.0 5372.0,7652.0 5983.3,7652.0 6276.8,7550.6 6311.8,7652.0 6452.0,7652.0 6452.0,0.0 4561.5,0.0 4561.5,208.0 2984.1,219.2 2984.1,0.0 1996.8,0.0 1538.0,2190.4 627.6,2195.6 1095.6,0.0 -0.0,-0.0 -0.0,3654.8 202.9,3652.9 202.5,4206.4 289.6,4206.4 5028.2,4176.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0009__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3084.0,2188.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.064702,41.886933]}},{"type":"Feature","properties":{"resourceCoords":[4280.0,2188.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.063219,41.886932]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0009__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p9 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"627.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1369.2"},{"label":"split_canvas_h","value":"2195.6"}],"created":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0009__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0009/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1095.6,0.0 638.1,2146.3 1548.5,2140.1 1996.8,0.0 1095.6,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0009__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1358.1,1007.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0637779,41.8899532]}},{"type":"Feature","properties":{"resourceCoords":[1106.6,2143.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0641376,41.888752]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0009__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Glen Ellyn, Illinois | 1929 | sanborn01893_003 p9 [3]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4206.4"},{"label":"split_canvas_w","value":"4660.8"},{"label":"split_canvas_h","value":"3445.6"}],"created":"2026-09-22T18:42:10Z","modified":"2026-09-22T18:42:10Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0009__3/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0009/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3859.6,7652.0 4660.8,4207.2 4596.2,4207.2 527.2,4256.9 288.7,4795.2 233.5,6562.7 -0.0,6558.7 -0.0,7652.0 3859.6,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931929:01893_1929-0009__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3588.6,5969.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0608075,41.8659605]}},{"type":"Feature","properties":{"resourceCoords":[252.0,5969.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.064917,41.86592]}}]}}]}