{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01893_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Glen Ellyn, Illinois | 1946 | 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":"27"},{"label":"placed","value":"24"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef-snap 15, georef 9"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 9 panels"},{"label":"unplaced pages","value":"p1 (tier 1, 41.80656,-87.92376 +/-501m); p15__3 (tier 1, 41.88400,-88.05140 +/-252m); p20__2 (tier 2, 41.86813,-88.06195 +/-323m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0010/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 | 1946 | sanborn01893_005 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0010/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0010/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,6025.8 923.2,6024.8 953.2,266.9 4413.2,271.6 4395.6,2266.2 5192.2,2265.9 4437.1,4507.8 5725.7,4516.3 5739.8,7135.2 -0.0,7159.1 -0.0,6025.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07227846846553,41.88529580679827]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06434950388253,41.8853505472383]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06426291606951,41.87829989658446]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07219188065251,41.87824515614442]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0011/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 | 1946 | sanborn01893_005 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0011/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0011/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6025.1,718.8 5995.7,4324.8 5880.2,4779.7 5885.1,5328.1 6452.0,5332.6 6452.0,7652.0 -0.0,7652.0 -0.0,662.6 6025.1,718.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07170145956445,41.889795816052036]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07163004971756,41.88388590386633]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.08097901474808,41.883822409265136]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.08105042459498,41.88973232145084]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0012/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 | 1946 | sanborn01893_005 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0012/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0012/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"971.1,1862.2 -0.0,1870.9 -0.0,-0.0 4590.8,0.0 4588.2,1931.3 5556.5,1845.3 5556.5,6950.9 967.4,6986.0 971.1,1862.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.0737097124746,41.891512999477]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06574784685492,41.89151365011721]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06574681758053,41.88443442403194]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07370868320021,41.88443377339173]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0013/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 | 1946 | sanborn01893_005 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0013/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0013/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"969.4,3816.2 -0.0,3903.5 -0.0,-0.0 6452.0,0.0 6452.0,7652.0 6167.3,7652.0 6261.6,7238.0 4926.3,6922.1 972.8,6945.3 969.4,3816.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0013/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06804172254884,41.893333785973105]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06008915517756,41.89332658032903]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.0601005544105,41.88625582612967]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06805312178177,41.886263031773744]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0014/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 | 1946 | sanborn01893_005 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0014/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0014/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"609.7,6954.1 1326.5,4707.7 532.6,4720.7 504.0,750.7 4456.1,705.6 5983.2,1057.9 5977.4,0.0 6452.0,0.0 6452.0,6561.7 4300.3,6586.5 4181.0,6897.3 609.7,6954.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0014/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06746819492646,41.88761215032946]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05951321500996,41.88757174963336]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05957712264116,41.88049821603751]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06753210255766,41.88053861673361]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0015__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 | 1946 | sanborn01893_005 p15 [1]","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"19"},{"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":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0015__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0015/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1336.5,6251.5 1615.1,6516.1 1951.8,6142.8 1971.1,6931.5 3723.1,6882.7 3832.5,6839.6 3831.7,6353.8 3979.2,6353.5 4060.8,6468.0 4378.6,6352.9 5069.3,6351.8 6452.0,5806.4 6452.0,1668.4 3260.4,1652.0 3264.8,0.0 964.3,0.0 1009.1,2410.7 1247.3,2407.6 1290.5,5720.9 1709.4,5710.6 1463.2,5908.3 1336.5,6251.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0015__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1416.0,2472.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.059102,41.887447]}},{"type":"Feature","properties":{"resourceCoords":[4028.0,6460.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.052877,41.880056]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0015__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 | 1946 | sanborn01893_005 p15 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"3260.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3191.6"},{"label":"split_canvas_h","value":"1668.4"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0015__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0015/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,-0.0 5908.2,-0.0 5917.7,176.0 4822.7,493.0 4294.6,521.9 4004.6,514.9 3454.6,424.6 3413.9,0.0 3264.8,0.0 3260.4,1652.0 6452.0,1668.4 6452.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0015__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4784.2,1216.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.055928,41.866113]}},{"type":"Feature","properties":{"resourceCoords":[5968.1,1216.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.052843,41.866001]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0016/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 | 1946 | sanborn01893_005 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0016/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0016/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4003.5,6143.3 2920.4,6517.3 998.7,6506.7 984.5,5138.0 1079.5,5083.0 920.0,5076.5 826.8,4950.5 637.8,4010.0 602.7,327.3 2886.3,308.9 3008.9,0.0 5990.8,0.0 5491.6,378.7 5222.8,1050.8 5764.1,1587.2 6452.0,865.8 6452.0,5289.7 5015.7,5790.6 5349.5,7277.0 4346.3,7632.9 4003.5,6143.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06593731371471,41.88148350597421]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05796888795474,41.88151173765466]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05792423410152,41.874425568336896]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06589265986149,41.87439733665644]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0017/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 | 1946 | sanborn01893_005 p17","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"18"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0017/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0017/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"507.6,3409.1 1957.0,2905.7 1966.7,0.0 5700.6,0.0 5690.8,375.4 6078.7,244.2 6075.8,6193.5 3645.2,6518.0 1291.1,7264.8 507.6,3409.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4880.0,2248.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.054363,41.877235]}},{"type":"Feature","properties":{"resourceCoords":[3788.0,2248.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.055701,41.877227]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0018__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 | 1946 | sanborn01893_005 p18 [1]","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"26"},{"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":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0018__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0018/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3471.6,6533.3 3608.5,6675.2 4629.7,6919.1 4618.4,6303.7 4793.3,6301.8 6452.0,5037.6 6452.0,0.0 1136.1,0.0 475.5,238.1 382.4,185.9 315.0,0.0 -0.0,-0.0 -0.0,1482.5 398.2,1335.4 556.5,7497.0 3471.6,6533.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0018__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3200.0,6648.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0497149,41.874346]}},{"type":"Feature","properties":{"resourceCoords":[4300.0,5760.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.048395,41.875114]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0018__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 | 1946 | sanborn01893_005 p18 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"4752.4"},{"label":"split_canvas_y","value":"5037.6"},{"label":"split_canvas_w","value":"1699.6"},{"label":"split_canvas_h","value":"2614.4"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0018__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0018/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,7652.0 6452.0,5037.6 4761.6,6326.0 4752.4,7652.0 6452.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0018__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[4752.4,5037.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.03228781781938,41.88537868084307]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,5037.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.03024361903482,41.88500943813704]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.03100626107081,41.88266579249122]}},{"type":"Feature","properties":{"resourceCoords":[4752.4,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.03305045985537,41.883035035197246]}},{"type":"Feature","properties":{"resourceCoords":[4732.4,6572.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0327611,41.8840072]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0019/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 | 1946 | sanborn01893_005 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0019/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0019/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"654.8,7652.0 537.9,362.6 2543.5,362.1 3633.2,0.0 3981.7,1473.2 4986.7,1109.8 6035.4,6503.0 4764.1,6506.9 4934.5,7652.0 654.8,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0019/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.0654210921066,41.87579821061627]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05748335424859,41.87578994780645]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.0574964223209,41.868730443858865]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06543416017891,41.86873870666868]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0002/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 | 1946 | sanborn01893_005 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0002/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,7390.2 -0.0,7312.1 -0.0,5288.3 408.0,5288.9 450.1,3491.4 -0.0,3582.0 -0.0,235.7 5788.1,262.2 5784.5,2408.1 6141.7,4285.9 6452.0,4569.9 6452.0,7390.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06873357065555,41.878851282414736]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06473504021051,41.87889651461588]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06466349770193,41.87534065038457]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06866202814697,41.87529541818343]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0020__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 | 1946 | sanborn01893_005 p20 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5639.6"},{"label":"split_canvas_w","value":"1972.8"},{"label":"split_canvas_h","value":"2012.4"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0020__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0020/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,7652.0 1972.8,7652.0 1961.6,5639.6 0.0,5648.0 0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0020__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,5639.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06063978103985,41.859834162183866]}},{"type":"Feature","properties":{"resourceCoords":[1972.8,5639.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05965579883843,41.85817066635902]}},{"type":"Feature","properties":{"resourceCoords":[1972.8,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.0619383752686,41.857421202208386]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06292235747001,41.85908469803323]}},{"type":"Feature","properties":{"resourceCoords":[180.1,6494.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0615197,41.8593647]}},{"type":"Feature","properties":{"resourceCoords":[180.1,6494.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0615197,41.8593647]}},{"type":"Feature","properties":{"resourceCoords":[164.1,6494.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0615197,41.8593647]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0021/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 | 1946 | sanborn01893_005 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0021/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0021/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5896.1 561.4,5889.3 377.4,4747.1 1647.7,4727.9 1034.5,1661.7 3361.1,873.1 5773.0,500.4 5868.7,6583.1 4040.7,7115.8 2795.6,7200.8 1796.5,7153.6 639.8,6923.2 585.5,6028.3 260.8,6016.9 202.7,7652.0 -0.0,7652.0 -0.0,5896.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0021/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05995684566928,41.87417571031999]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05201485908538,41.8740955062136]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05214170278613,41.86703203703599]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06008368937003,41.86711224114238]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0022/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 | 1946 | sanborn01893_005 p22","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0022/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0022/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"716.6,6820.1 662.1,1099.1 3476.7,207.7 3606.9,344.8 4586.9,588.3 4582.4,0.0 6452.0,0.0 6452.0,7652.0 1835.6,7652.0 1868.3,6867.2 716.6,6820.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0022/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05366286711045,41.87465970116803]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.04573196560253,41.87461551090683]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.04580185355607,41.86756195672505]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.05373275506399,41.86760614698625]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0003/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 | 1946 | sanborn01893_005 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0003/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2911.5,7314.2 147.6,7285.9 151.1,186.4 6027.1,250.1 6040.2,6061.5 3676.3,5344.2 2917.7,5277.6 2911.5,7314.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06849931551912,41.87553969704109]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06449873563275,41.87558206375587]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06443172884556,41.872024193175406]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06843230873193,41.871981826460626]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0004/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 | 1946 | sanborn01893_005 p4","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"27"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0004/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7125.2 -0.0,-0.0 2378.0,0.0 2378.4,139.4 4988.6,112.6 4990.0,2219.2 4597.8,2237.5 4493.1,2245.1 4485.9,3432.3 5678.2,3440.2 6247.1,3614.5 4847.6,5202.2 5763.8,5185.7 5753.5,7415.7 3451.1,7448.8 3358.5,6900.9 3187.0,7098.0 2825.0,6785.7 2350.5,6585.1 1302.3,6466.2 775.2,6295.9 -0.0,7125.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3868.0,6304.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.07627,41.872991]}},{"type":"Feature","properties":{"resourceCoords":[2380.0,2668.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.078113,41.8763188]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0005/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 | 1946 | sanborn01893_005 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0005/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0005/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1296.8,7479.7 1293.8,5254.9 373.9,5276.8 1769.5,3684.4 1197.2,3514.0 -0.0,3513.2 -0.0,2328.7 498.9,2299.9 484.7,198.2 5538.8,103.1 5568.6,1797.3 5795.7,1747.4 5790.3,2657.9 5583.8,2661.2 5601.8,3685.8 5815.2,3684.6 5873.1,7281.0 3092.1,7297.7 3093.0,7652.0 -0.0,7652.0 -0.0,7507.8 1296.8,7479.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.0755106208535,41.87884903128327]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06761333112415,41.87883434238107]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06763656350367,41.8718111442197]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07553385323303,41.8718258331219]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0006__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 | 1946 | sanborn01893_005 p6 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"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":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0006__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0006/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3916.0,7652.0 3918.5,7406.5 4707.9,7410.2 4781.8,4271.5 5792.2,4068.3 5367.3,1061.7 5195.4,1254.2 4841.9,941.1 4376.0,736.8 3342.3,605.8 2823.9,430.9 2047.6,1239.9 2063.9,0.0 1970.4,0.0 2002.0,3268.0 0.0,3251.2 -0.0,7652.0 3916.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3064.0,4504.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.079686,41.869218]}},{"type":"Feature","properties":{"resourceCoords":[5452.0,1604.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0767757,41.8719432]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0006__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 | 1946 | sanborn01893_005 p6 [2]","metadata":[{"label":"streets","value":"1"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2002.0"},{"label":"split_canvas_h","value":"3268.0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0006__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0006/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 0.0,3251.2 2002.0,3268.0 1970.4,0.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0006__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":[-88.08947259837917,41.870118981055285]}},{"type":"Feature","properties":{"resourceCoords":[2002.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.08767760157744,41.86884985494364]}},{"type":"Feature","properties":{"resourceCoords":[2002.0,3268.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.09046100930016,41.86666463208304]}},{"type":"Feature","properties":{"resourceCoords":[0.0,3268.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.09225600610189,41.86793375819468]}},{"type":"Feature","properties":{"resourceCoords":[981.0,204.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0887668,41.8693607]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0007/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 | 1946 | sanborn01893_005 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0007/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0007/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"843.1,3454.4 1865.4,3239.4 1494.8,760.5 2507.2,750.9 2505.9,894.7 5590.5,922.5 5581.9,2243.4 6452.0,2108.0 6452.0,3383.6 5938.1,3466.0 5565.4,6506.9 6452.0,6507.8 6452.0,7652.0 -0.0,7652.0 -0.0,6621.1 800.4,6616.8 843.1,3454.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07861634778122,41.872634170267]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07069811414735,41.87267298563979]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07063672858624,41.86563048250956]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07855496222011,41.86559166713677]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0008/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 | 1946 | sanborn01893_005 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0008/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0008/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"395.8,7154.6 778.7,4099.1 1295.5,4017.8 1299.0,2735.6 424.0,2869.4 439.6,1186.6 4631.0,1210.1 4629.1,175.9 5014.6,207.8 6216.8,566.2 6235.4,4960.1 6452.0,4962.4 6452.0,7652.0 1285.6,7652.0 1286.9,7157.8 395.8,7154.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07229817802757,41.87322678587556]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06442021582531,41.87328148291237]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.06433371298805,41.86627486322782]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.0722116751903,41.86622016619101]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0009/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 | 1946 | sanborn01893_005 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T08:47:12Z","modified":"2026-09-23T08:47:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0009/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0009/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7173.7 -0.0,1648.8 353.9,1645.5 353.2,1080.6 899.7,1070.7 1353.9,1181.6 4947.3,1177.8 4945.6,330.4 6096.3,321.5 6120.3,6092.7 5195.2,6122.0 5205.7,7238.3 370.6,7311.2 369.6,7172.3 -0.0,7173.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd410m:g4104m:g4104gm:g018931946:01893_1946-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07857889921237,41.885354494033095]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.0706678108828,41.88535352566257]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07066934264108,41.87831877420687]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.07858043097066,41.87831974257739]}}]}}]}