{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01790_008.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Chicago, Illinois | 1896 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"103"},{"label":"placed","value":"41"},{"label":"unplaced","value":"62"},{"label":"fit sources","value":"georef-snap 19, georef 18, snap:0 2, snap:1 1, georef-street 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"5 sheet(s) cut into 11 panels"},{"label":"unplaced pages","value":"p10 (tier 2, 41.88549,-87.75428 +/-100m); p12 (tier 4, 41.85750,-87.71949 +/-8011m); p13 (tier 4, 41.85750,-87.71949 +/-8011m); p14 (tier 1, 41.91542,-87.72530 +/-257m); p15 (tier 2, 41.87999,-87.73925 +/-1342m); p17 (tier 1, 41.91807,-87.72897 +/-266m); p18 (tier 4, 41.85750,-87.71949 +/-8011m); p19 (tier 4, 41.85750,-87.71949 +/-8011m); p20__1 (tier 1, 41.88696,-87.73674 +/-230m); p20__2 (tier 2, 41.88802,-87.73287 +/-100m); p21 (tier 1, 41.88895,-87.73579 +/-265m); p22 (tier 4, 41.85750,-87.71949 +/-8011m); p23__1 (tier 4, 41.85750,-87.71949 +/-8011m); p23__2 (tier 4, 41.85750,-87.71949 +/-8011m); p25 (tier 4, 41.85750,-87.71949 +/-8011m); p26 (tier 4, 41.85750,-87.71949 +/-8011m); p27 (tier 1, 41.84323,-87.72899 +/-261m); p28 (tier 4, 41.85750,-87.71949 +/-8011m); p29 (tier 2, 41.88614,-87.73344 +/-117m); p31 (tier 2, 41.88618,-87.73045 +/-117m); p32 (tier 4, 41.85750,-87.71949 +/-8011m); p33 (tier 4, 41.85750,-87.71949 +/-8011m); p34 (tier 2, 41.88434,-87.73191 +/-100m); p35 (tier 4, 41.85750,-87.71949 +/-8011m); p36 (tier 4, 41.85750,-87.71949 +/-8011m); p37 (tier 4, 41.85750,-87.71949 +/-8011m); p38 (tier 2, 41.86277,-87.72752 +/-100m); p39 (tier 4, 41.85750,-87.71949 +/-8011m); p40 (tier 2, 41.87791,-87.73160 +/-100m); p41 (tier 3, 41.87541,-87.73632 +/-703m); p42 (tier 2, 41.86872,-87.73007 +/-940m); p44 (tier 2, 41.86226,-87.72996 +/-118m); p45 (tier 4, 41.85750,-87.71949 +/-8011m); p46 (tier 4, 41.85750,-87.71949 +/-8011m); p47 (tier 4, 41.85750,-87.71949 +/-8011m); p49 (tier 2, 41.87414,-87.74192 +/-120m); p5 (tier 1, 41.87162,-87.73709 +/-298m); p50 (tier 2, 41.86377,-87.73246 +/-100m); p51 (tier 4, 41.85750,-87.71949 +/-8011m); p52 (tier 2, 41.86990,-87.73143 +/-100m); p53 (tier 4, 41.85750,-87.71949 +/-8011m); p54 (tier 1, 41.88010,-87.73423 +/-135m); p55 (tier 4, 41.85750,-87.71949 +/-8011m); p57 (tier 1, 41.86775,-87.74045 +/-261m); p59 (tier 2, 41.86805,-87.73013 +/-121m); p61 (tier 2, 41.86367,-87.73097 +/-188m); p62 (tier 2, 41.86247,-87.72894 +/-100m); p63 (tier 1, 41.88378,-87.72701 +/-257m); p65 (tier 2, 41.86066,-87.72800 +/-118m); p66 (tier 1, 41.85811,-87.73474 +/-261m); p67__1 (tier 4, 41.85750,-87.71949 +/-8011m); p67__2 (tier 4, 41.85750,-87.71949 +/-8011m); p70 (tier 1, 41.84708,-87.75152 +/-277m); p72 (tier 2, 41.89214,-87.74547 +/-100m); p73 (tier 1, 41.83961,-87.72652 +/-133m); p74 (tier 1, 41.84784,-87.69462 +/-292m); p75__1 (tier 4, 41.85750,-87.71949 +/-8011m); p75__2 (tier 4, 41.85750,-87.71949 +/-8011m); p79 (tier 2, 41.91977,-87.76880 +/-100m); p8 (tier 1, 41.88777,-87.79688 +/-261m); p80__1 (tier 2, 41.85766,-87.72390 +/-4554m); p80__2 (tier 2, 41.85766,-87.72390 +/-4554m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p1","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0001","type":"ImageService3","width":1422,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"72.3,2074.3 60.1,2054.8 67.8,123.3 156.4,67.1 811.5,60.1 1268.5,121.4 1350.0,377.9 1344.0,1927.8 1370.3,2052.1 1407.6,2051.0 1407.2,2063.5 238.7,2055.9 238.6,2087.3 72.3,2074.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[562.0,1069.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7327209,41.9189299]}},{"type":"Feature","properties":{"resourceCoords":[562.0,2058.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7326651,41.9170965]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0011","type":"ImageService3","width":1422,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"172.6,1792.0 232.3,1756.5 239.9,972.0 156.1,721.0 151.3,200.3 655.8,77.9 1156.4,160.8 1251.5,595.3 1253.2,2047.3 496.9,2062.2 303.0,2061.1 170.0,1923.9 172.6,1792.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74881051716241,41.89514788855548]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74532103977683,41.89519790226832]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74522129330298,41.89128697931629]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74871077068856,41.89123696560345]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.36"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0016","type":"ImageService3","width":1422,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"110.0,1509.7 260.4,1303.8 150.3,737.5 188.6,355.4 221.2,211.7 391.9,71.3 1235.0,106.0 1245.9,1168.4 1330.4,1893.0 1261.2,2050.3 345.1,2021.1 158.1,1929.9 110.0,1509.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73348189448285,41.87799598884257]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.7299415628961,41.87805966190444]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72981460935628,41.87409065195912]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73335494094303,41.874026978897255]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0002","type":"ImageService3","width":1422,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1066.8,2040.2 64.3,2048.2 64.6,2031.4 85.4,2030.7 89.8,56.2 1303.6,110.8 1366.4,485.4 1353.5,2027.4 1283.9,2092.2 1139.3,2082.1 1138.7,2009.0 1067.1,2008.2 1066.8,2040.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73292257218563,41.87353878901215]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72948957392904,41.87362285245113]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72932197429556,41.86977396688839]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73275497255214,41.86968990344941]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.72"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0024","type":"ImageService3","width":1419,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1259.7,2098.4 76.7,2047.0 133.9,1704.2 63.7,1578.6 118.3,987.1 54.6,510.4 135.1,95.0 877.0,43.1 1318.7,117.2 1347.8,2048.9 1259.7,2098.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0024/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.75023229489712,41.88810249284778]}},{"type":"Feature","properties":{"resourceCoords":[1419.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.75016635002984,41.8854671838647]}},{"type":"Feature","properties":{"resourceCoords":[1419.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.75543272509815,41.885393110429746]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.75549866996542,41.88802841941283]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p3","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.06"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0003","type":"ImageService3","width":1422,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1339.3,2051.8 841.2,2053.6 841.2,2045.7 347.9,2053.9 55.5,2084.2 54.0,1997.6 72.1,1997.8 62.8,479.6 120.3,196.3 106.8,144.9 23.6,138.4 23.7,111.5 23.8,106.9 1195.7,114.5 1196.0,102.0 1297.5,99.0 1347.2,158.5 1348.5,1979.0 1339.3,2051.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[348.0,1096.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7326095,41.9152721]}},{"type":"Feature","properties":{"resourceCoords":[348.0,109.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7326651,41.9170965]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p30","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.75"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0030","type":"ImageService3","width":1419,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"179.8,1137.2 210.2,663.1 218.2,663.1 217.8,545.5 237.0,247.7 1017.3,207.2 1250.8,285.6 1280.1,1892.5 1277.8,1994.7 382.1,1937.6 214.5,1868.1 179.8,1137.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0030/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73378046995253,41.8881274618335]}},{"type":"Feature","properties":{"resourceCoords":[1419.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.7302835255537,41.888187579897206]}},{"type":"Feature","properties":{"resourceCoords":[1419.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73016338636656,41.884259586476716]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73366033076539,41.88419946841301]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.07"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0004","type":"ImageService3","width":1422,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"33.7,2042.2 24.7,1611.1 59.1,43.2 383.3,92.2 696.5,39.8 1354.0,50.3 1360.2,123.0 1346.8,123.0 1364.6,174.8 1395.5,536.2 1375.2,2084.2 80.1,2083.9 33.7,2042.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72785782015171,41.91737330767187]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.724055945569,41.91744811723495]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72390669568175,41.91318852310132]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72770857026445,41.913113713538245]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p43","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.64"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0043","type":"ImageService3","width":1418,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1189.2,1930.6 199.5,1658.3 199.7,1558.0 20.0,1558.7 20.0,1545.5 167.4,1536.8 124.0,406.4 158.2,163.5 277.3,69.9 1113.1,64.5 1188.8,274.0 1189.1,1554.3 1289.3,1553.8 1287.7,1965.2 1213.7,2017.2 1189.2,1930.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0043/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72741683702009,41.86468771946871]}},{"type":"Feature","properties":{"resourceCoords":[1418.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72734739783547,41.86207820306711]}},{"type":"Feature","properties":{"resourceCoords":[1418.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73256411832274,41.86200012282806]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73263355750736,41.86460963922966]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p48","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.39"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0048/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0048","type":"ImageService3","width":1420,"height":2127},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"109.0,54.8 1006.9,47.7 1329.4,99.5 1333.0,2035.8 787.2,2088.0 74.2,2055.8 54.1,192.2 109.0,54.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0048/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74525770841028,41.87603576149184]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.7417616187366,41.87610061642897]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,2127.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74163207965873,41.87217341573253]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2127.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.7451281693324,41.872108560795404]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p56","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.40"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0056/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0056","type":"ImageService3","width":1420,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"57.8,94.7 533.3,36.0 1333.8,56.0 1354.5,2036.9 337.7,2094.5 79.2,2031.5 57.8,94.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0056/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.7450319645445,41.86965848604444]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74156294317096,41.86969954029639]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74148098370436,41.86580446527165]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74495000507791,41.86576341101971]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p58","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.53"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0058","type":"ImageService3","width":1420,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"855.7,2088.6 301.0,2084.1 17.9,2081.8 17.9,2079.3 17.9,2076.5 105.2,2052.2 47.2,1792.4 77.6,150.6 188.0,74.7 384.9,67.0 384.9,83.2 1349.9,70.3 1350.1,39.5 1419.0,40.0 1419.0,110.3 1364.6,106.8 1369.3,2050.8 1324.7,2099.8 855.6,2105.9 855.7,2088.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0058/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73357641290603,41.869971324189905]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73001546993174,41.87004417362757]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72987003193327,41.8660459860539]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73343097490756,41.86597313661623]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p6","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.55"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0006","type":"ImageService3","width":1422,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1342.4,1163.6 1340.5,1163.5 1318.9,2083.3 271.1,2076.9 125.7,2034.4 59.2,1947.5 81.2,89.3 714.5,36.0 1401.0,90.5 1342.4,1163.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.736726878405,41.91353649256264]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73324271038221,41.91375607360124]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73280178626705,41.90987763070987]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73628595428983,41.90965804967127]}},{"type":"Feature","properties":{"resourceCoords":[264.0,2059.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7356521,41.9098211]}},{"type":"Feature","properties":{"resourceCoords":[264.0,2059.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7354011,41.9097195]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p60","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.61"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0060/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0060","type":"ImageService3","width":1418,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"473.4,55.3 473.4,60.7 763.9,60.7 1333.3,60.7 1333.3,78.5 1303.0,80.6 1349.0,855.6 1337.0,875.7 1337.7,1056.2 1237.0,1056.0 964.5,2049.9 877.5,2074.6 872.1,2066.8 375.4,2072.0 95.5,1978.3 67.3,1904.2 105.3,1080.7 62.5,608.8 130.4,153.8 455.1,60.6 473.4,55.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0060/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73454895129096,41.86615188961969]}},{"type":"Feature","properties":{"resourceCoords":[1418.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73108340053706,41.86620168152706]}},{"type":"Feature","properties":{"resourceCoords":[1418.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73098386153565,41.86230484842455]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73444941228955,41.86225505651718]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0064/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p64","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.67"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0064/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0064","type":"ImageService3","width":1420,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1316.3,70.4 1349.3,2041.0 712.0,2084.0 73.5,2039.0 71.6,1858.8 100.7,171.9 54.4,172.0 53.1,71.5 1337.3,62.7 1316.3,70.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0064/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73130488093376,41.8625722126718]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72783065711154,41.86260688319044]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.7277614479639,41.85870562706919]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.73123567178612,41.858670956550554]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0068/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p68","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.18"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0068/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0068","type":"ImageService3","width":1420,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"61.5,292.7 201.2,171.8 579.7,148.1 915.6,44.4 1315.6,42.6 1372.3,875.0 1373.7,1053.7 1353.2,2079.4 102.5,2084.1 53.3,1960.7 61.5,292.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0068/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.75225927566866,41.84131908116215]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74872336632244,41.8413552229494]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74865123895633,41.83738366864229]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.75218714830255,41.837347526855034]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p69","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.19"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0069/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0069","type":"ImageService3","width":1416,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"52.1,1950.3 71.4,92.0 161.2,42.7 876.8,39.4 1117.5,141.6 1265.1,138.1 1376.5,952.4 1347.0,2080.2 93.3,2069.4 52.1,1950.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0069/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1329.0,1063.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7465357,41.8457747]}},{"type":"Feature","properties":{"resourceCoords":[1329.0,70.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7465996,41.8475907]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p7","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.67"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0007","type":"ImageService3","width":1422,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"85.2,1119.2 87.1,1119.1 29.0,156.3 314.1,114.6 796.6,86.3 796.9,94.0 1284.5,71.6 1292.6,46.8 1365.6,124.0 1367.2,2006.8 1365.2,2043.7 1339.6,2090.8 367.1,2088.3 166.8,2014.0 85.2,1119.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[356.0,1109.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7324985,41.9116239]}},{"type":"Feature","properties":{"resourceCoords":[356.0,2070.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.732546,41.9098108]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0071/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p71","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.45"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0071/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0071","type":"ImageService3","width":1416,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"73.5,623.1 35.0,404.6 95.7,187.8 47.8,95.5 558.6,34.6 1344.0,49.0 1405.2,956.9 1370.6,2073.8 464.2,2092.3 33.3,2042.3 23.4,1037.0 73.5,623.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0071/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72936162941222,41.84437255882198]}},{"type":"Feature","properties":{"resourceCoords":[1416.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72573940000663,41.84442241782053]}},{"type":"Feature","properties":{"resourceCoords":[1416.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72563962051994,41.84034224788593]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.72926184992554,41.84029238888738]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0076/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p76","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0076/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0076","type":"ImageService3","width":1417,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1399.7,2042.1 1380.8,2020.2 1342.9,2085.2 1159.2,2081.8 1072.3,2014.5 844.6,2010.3 821.5,2068.2 336.7,2059.2 155.1,1946.5 77.3,587.9 131.2,56.3 836.9,40.1 1385.3,115.8 1399.7,2042.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0076/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.75629367984911,41.91698540922899]}},{"type":"Feature","properties":{"resourceCoords":[1417.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.75279773911662,41.917033818273445]}},{"type":"Feature","properties":{"resourceCoords":[1417.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.75270081951277,41.913103155722084]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.75619676024526,41.91305474667763]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0077/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p77","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0077/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0077","type":"ImageService3","width":1416,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"314.1,33.7 1340.7,72.5 1306.7,224.6 1361.5,350.2 1320.4,494.7 1375.2,620.3 1384.7,1028.8 1345.0,2084.6 67.5,2089.1 29.4,2043.9 38.5,119.8 314.1,33.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0077/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.75297495146431,41.91703827345913]}},{"type":"Feature","properties":{"resourceCoords":[1416.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74947828189362,41.91711877412199]}},{"type":"Feature","properties":{"resourceCoords":[1416.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.74931699589938,41.91318456529398]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.75281366547007,41.91310406463112]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0078/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p78","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.67"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0078/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0078","type":"ImageService3","width":1417,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"52.2,746.2 118.0,534.0 62.8,392.0 77.4,148.7 258.6,58.0 473.5,86.5 594.0,38.4 1283.8,103.2 1368.8,497.2 1319.7,650.9 1351.9,2070.1 206.5,2065.7 89.1,2010.5 58.3,1795.3 52.2,746.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0078/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.77210942167082,41.92061458454336]}},{"type":"Feature","properties":{"resourceCoords":[1417.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.76865606600694,41.920691403062285]}},{"type":"Feature","properties":{"resourceCoords":[1417.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.76850225679986,41.91680890073045]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.77195561246374,41.916732082211524]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0080__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p80 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.65"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4135.6"},{"label":"split_canvas_w","value":"5668.0"},{"label":"split_canvas_h","value":"4368.4"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0080__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0080","type":"ImageService3","width":1417,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1362.2,1091.8 1280.0,1156.5 1119.3,1079.8 146.7,1068.5 45.2,1368.4 39.2,1677.6 136.4,1988.7 1112.3,2109.2 1244.2,2109.1 1387.5,2078.9 1362.2,1091.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0080__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1166.0,2063.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7168348,41.8297648]}},{"type":"Feature","properties":{"resourceCoords":[1166.0,1082.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.716881,41.8315605]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0081/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p81","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.75"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0081/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0081","type":"ImageService3","width":1416,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"150.8,2086.6 144.3,1643.7 166.9,1423.1 227.9,1366.2 249.4,968.5 241.5,776.5 158.3,625.9 237.1,274.6 306.1,203.2 766.8,108.8 1133.9,158.8 1196.8,256.9 1293.8,1477.8 1185.4,1621.5 1146.7,2096.5 222.6,2086.7 150.8,2086.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0081/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1260.0,1597.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.68487810446695,41.83120761637273]}},{"type":"Feature","properties":{"resourceCoords":[1260.0,-50.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.68502124370664,41.83421876799117]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0082/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p82","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0082/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0082","type":"ImageService3","width":1417,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"242.2,1933.6 239.3,1563.7 241.0,1064.0 210.4,1064.0 166.7,936.0 175.1,255.8 311.6,60.6 913.6,52.2 1234.0,109.5 1232.7,1951.1 1247.6,1981.0 1247.5,2102.3 1243.8,2108.9 1232.2,2108.9 1221.0,2108.9 1217.9,2103.6 1217.9,2077.3 257.4,2058.4 258.0,1988.9 227.1,1978.2 227.1,1976.2 227.2,1959.4 242.2,1933.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0082/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[241.0,1064.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6947717,41.8282724]}},{"type":"Feature","properties":{"resourceCoords":[1233.0,1561.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6922974,41.8274002]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0083/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p83","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0083/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0083","type":"ImageService3","width":1416,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"303.1,64.8 755.1,52.3 1220.3,121.5 1223.3,117.8 1222.7,2026.2 1222.6,2062.7 242.4,2081.7 242.4,2002.2 227.3,1972.1 226.7,113.7 303.1,64.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0083/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1223.0,1068.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6898905,41.8283688]}},{"type":"Feature","properties":{"resourceCoords":[227.0,1068.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6923247,41.8283298]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0084/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p84","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0084/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0084","type":"ImageService3","width":1417,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1184.0,1957.8 1188.5,2057.6 243.6,2080.5 243.6,2065.4 243.3,1993.5 236.9,112.0 286.6,50.9 1076.0,52.5 1199.5,53.0 1254.7,52.0 1197.9,1045.5 1181.0,1045.5 1231.0,1958.2 1184.0,1957.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0084/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.69052776957723,41.83029827487808]}},{"type":"Feature","properties":{"resourceCoords":[1417.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.68703959417988,41.830345139847424]}},{"type":"Feature","properties":{"resourceCoords":[1417.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.68694589400064,41.826417849139396]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.69043406939798,41.82637098417006]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0085/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p85","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.21"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0085/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0085","type":"ImageService3","width":1416,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"295.9,2077.8 170.5,1120.8 187.7,1119.4 168.0,96.8 191.1,94.7 1091.8,19.7 1128.5,19.9 1132.6,350.5 1323.1,910.7 1293.8,1310.8 1369.4,1577.1 1293.6,1694.2 1274.8,2067.1 295.9,2077.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0085/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1244.0,1035.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6849773,41.8284476]}},{"type":"Feature","properties":{"resourceCoords":[643.0,57.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6862874,41.8302654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0086/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p86","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0086/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0086","type":"ImageService3","width":1413,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1200.2,1092.5 1184.9,1063.7 1154.8,1078.4 1183.0,1092.4 1204.0,1092.5 1236.7,1092.3 1371.0,1286.0 1412.0,1285.9 1412.0,1873.3 1268.7,2049.8 561.5,2064.3 347.3,2064.6 279.9,1993.7 261.7,1554.8 167.7,1516.0 171.8,1348.0 274.6,1328.7 235.9,538.5 327.0,109.7 322.8,104.4 773.0,85.8 773.0,94.7 1254.5,112.8 1270.9,1063.1 1200.2,1063.4 1200.2,1092.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0086/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[773.0,2064.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7045365,41.8271688]}},{"type":"Feature","properties":{"resourceCoords":[773.0,83.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6996286,41.8272602]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0087/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p87","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0087/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0087","type":"ImageService3","width":1416,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1147.3,80.9 1222.8,81.6 1224.0,1109.8 1204.0,1111.8 1222.9,2074.6 739.6,2057.6 739.5,2048.7 287.8,2068.4 185.1,1939.3 234.8,1361.1 176.9,1323.2 137.7,141.6 106.2,141.2 234.0,97.5 234.0,67.0 733.2,68.7 1102.8,65.8 1128.6,80.8 1147.3,80.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0087/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[234.0,1061.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6972255,41.8282311]}},{"type":"Feature","properties":{"resourceCoords":[234.0,67.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6947717,41.8282724]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0088/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p88","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0088/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0088","type":"ImageService3","width":1417,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1334.2,2091.6 97.2,2073.4 46.6,1667.3 118.4,1403.7 70.5,1225.9 64.7,76.8 721.1,31.4 1229.2,41.9 1337.8,111.5 1356.4,586.8 1367.8,586.8 1367.8,876.2 1375.8,1080.9 1367.8,1080.9 1367.4,2049.1 1334.2,2091.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0088/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1358.0,579.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.70694544374348,41.8252958063433]}},{"type":"Feature","properties":{"resourceCoords":[1358.0,1576.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.70689491841507,41.82346972179848]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0089/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p89","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0089/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0089","type":"ImageService3","width":1416,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"722.2,2088.3 561.9,2003.5 244.7,2003.8 209.8,2048.2 211.9,1078.8 220.0,1078.8 212.3,873.8 213.0,584.0 201.6,584.0 183.9,108.0 206.1,122.2 1223.8,123.0 1222.7,75.1 1415.0,230.4 1415.0,455.9 1353.4,455.9 1211.0,580.6 1212.5,1079.3 1208.5,1575.6 1208.6,1958.8 1197.1,2073.1 992.4,2072.2 973.3,2088.8 722.2,2088.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0089/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[213.0,584.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7069209,41.8252819]}},{"type":"Feature","properties":{"resourceCoords":[1211.0,584.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7044713,41.8253231]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.58"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0009","type":"ImageService3","width":1422,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"431.9,97.9 432.9,80.7 734.1,57.5 1082.2,95.9 1191.7,172.5 1237.1,719.5 1194.0,954.4 1322.4,1739.5 1294.5,1960.0 1262.5,2047.7 1142.8,2081.5 393.7,2040.2 144.3,1915.8 139.4,98.2 431.9,97.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.70247466828947,41.821907312087696]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.69900892134714,41.82197394229228]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.69887617417697,41.81808555019974]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.7023419211193,41.818018919995154]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0090/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p90","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.61"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0090/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0090","type":"ImageService3","width":1417,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1416.0,1597.5 1416.0,1588.3 1196.5,1589.1 1212.2,1547.7 1212.9,99.7 1098.7,16.0 802.0,15.0 801.1,1.0 800.9,1.0 800.0,15.0 356.6,15.0 233.6,122.9 235.2,614.0 231.4,1102.7 231.6,1480.0 220.3,1592.6 18.8,1591.8 18.9,1608.2 108.6,1608.4 137.6,1935.9 280.1,2062.5 1129.9,2059.7 1130.0,2078.4 1416.0,2077.1 1416.0,2060.2 1289.5,2070.4 1285.4,1598.3 1416.0,1597.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0090/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.7050605,41.8255478]}},{"type":"Feature","properties":{"resourceCoords":[1417.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.7015287,41.8256064]}},{"type":"Feature","properties":{"resourceCoords":[1417.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.70141079999999,41.821657699999996]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2126.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.7049426,41.8215991]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0091/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p91","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0091/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0091","type":"ImageService3","width":1418,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"20.7,426.8 21.0,232.0 13.0,229.0 21.0,228.0 21.3,171.6 194.6,51.9 194.5,19.1 194.5,15.3 204.9,15.3 223.7,15.4 223.8,86.3 1170.8,71.8 1182.2,586.7 1196.4,586.7 1192.3,2017.0 1170.8,2078.2 407.6,2078.9 406.6,2069.6 185.0,2069.3 201.1,2027.6 208.6,565.9 20.7,426.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0091/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[206.0,1079.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.7020041,41.8244687]}},{"type":"Feature","properties":{"resourceCoords":[1195.0,1079.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6995626,41.8245176]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0092/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p92","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0092/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0092","type":"ImageService3","width":1420,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"208.3,2039.0 212.4,601.1 198.1,601.1 186.7,83.5 1161.3,68.5 1253.9,1096.0 1209.0,1096.0 1207.9,1844.0 1205.2,2048.5 1189.4,2099.4 186.6,2100.4 208.3,2039.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0092/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[211.0,1096.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6995626,41.8245176]}},{"type":"Feature","properties":{"resourceCoords":[1209.0,1096.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6971117,41.8245667]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0093/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p93","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0093/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0093","type":"ImageService3","width":1418,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"221.2,2046.7 223.9,1842.8 225.0,1097.0 269.8,1097.0 179.2,92.5 1209.7,95.8 1207.9,226.6 1222.3,260.4 1220.7,596.8 1206.3,2096.5 205.4,2097.5 221.2,2046.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0093/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1216.0,1097.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6946708,41.8246156]}},{"type":"Feature","properties":{"resourceCoords":[225.0,1097.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6971117,41.8245667]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0094/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p94","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0094/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0094","type":"ImageService3","width":1415,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"219.3,12.5 250.6,12.6 250.3,82.6 1218.0,96.5 1218.2,123.0 1244.3,128.2 1233.1,148.4 1241.8,2025.4 1038.2,2082.6 235.0,2091.1 235.0,582.0 233.3,243.5 218.6,209.7 219.3,12.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0094/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[235.0,1584.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.69465,41.8237058]}},{"type":"Feature","properties":{"resourceCoords":[235.0,582.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6946923,41.825534]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0095/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p95","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0095/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0095","type":"ImageService3","width":1418,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"211.6,156.4 226.7,129.7 226.9,86.8 1203.8,73.1 1203.6,109.5 1200.8,583.8 1192.6,2014.3 1158.8,2041.2 714.4,2089.7 264.6,2070.2 221.6,2024.8 202.2,2030.0 211.6,156.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0095/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[207.0,1082.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.692217,41.8246648]}},{"type":"Feature","properties":{"resourceCoords":[1198.0,1082.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6897868,41.8247135]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0096/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p96","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0096/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0096","type":"ImageService3","width":1411,"height":2127},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"195.1,2031.3 184.6,2009.1 192.8,574.2 195.5,113.8 1146.8,99.0 1181.4,1074.0 1186.0,1074.0 1184.0,1562.2 1185.5,2054.4 195.1,2031.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0096/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[190.0,1074.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6897868,41.8247135]}},{"type":"Feature","properties":{"resourceCoords":[1186.0,1074.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.6873517,41.8247622]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0097/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chicago, Illinois | 1896 | sanborn01790_008 p97","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T05:53:20Z","modified":"2026-10-18T05:53:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0097/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0097","type":"ImageService3","width":1422,"height":2126},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"215.0,1570.8 208.3,1085.7 203.8,1085.8 147.0,17.2 194.1,17.3 195.6,42.5 1153.4,96.7 1148.5,137.4 1332.0,977.5 1275.0,1580.0 1314.6,2065.8 225.1,2059.6 215.0,1570.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017901896B:01790_B_1896-0097/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[212.0,1085.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.68734276244646,41.82476350906643]}},{"type":"Feature","properties":{"resourceCoords":[212.0,1228.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.68733951328178,41.82450121232379]}}]}}]}