{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn06648_050.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Cleveland, Ohio | 1950 | 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":"76"},{"label":"placed","value":"59"},{"label":"unplaced","value":"17"},{"label":"fit sources","value":"georef-snap 31, georef 25, snap:0 3"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"13 sheet(s) cut into 29 panels"},{"label":"unplaced pages","value":"p0__2 (tier 2, 41.44974,-81.81411 +/-3910m); p1610__3 (tier 1, 41.47782,-81.78606 +/-114m); p1611__1 (tier 1, 41.46876,-81.80978 +/-128m); p1611__2 (tier 1, 41.46919,-81.81077 +/-100m); p1620__2 (tier 1, 41.46089,-81.79550 +/-198m); p1621__1 (tier 1, 41.47108,-81.81587 +/-100m); p1631__1 (tier 1, 41.43718,-81.83558 +/-100m); p1636__2 (tier 1, 41.45571,-81.79095 +/-100m); p1638__2 (tier 1, 41.45241,-81.80690 +/-100m); p1642 (tier 1, 41.45114,-81.80350 +/-269m); p1649__1 (tier 1, 41.42684,-81.79307 +/-100m); p1649__2 (tier 3, 41.42761,-81.79090 +/-655m); p1649__3 (tier 3, 41.42761,-81.79090 +/-655m); p1650__1 (tier 4, 41.46039,-81.80655 +/-4998m); p1650__2 (tier 1, 41.40697,-81.78468 +/-211m); p1653__1 (tier 1, 41.46785,-81.80034 +/-100m); p1653__3 (tier 2, 41.46013,-81.81196 +/-392m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1601/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1601","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1601/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1601","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1562.4,80.6 1518.9,717.0 1535.6,716.2 1522.0,1418.4 1539.8,1416.5 1584.0,1846.4 1237.9,1817.8 1281.0,1919.5 43.0,1870.0 34.4,825.0 61.2,433.8 113.7,410.8 96.9,192.9 111.7,170.2 103.6,95.1 118.2,49.9 126.3,117.5 230.9,33.9 651.8,30.5 1636.0,70.2 1636.0,81.7 1562.4,80.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1601/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1073.0,1418.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81916351852884,41.47517757610652]}},{"type":"Feature","properties":{"resourceCoords":[651.0,94.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.82014815790593,41.47755930776595]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1602/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1602","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1602/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1602","type":"ImageService3","width":1643,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"173.1,1817.4 125.4,1391.3 107.9,1393.3 115.2,696.6 98.6,697.5 136.2,65.8 209.2,66.2 209.1,54.9 210.1,54.9 1403.5,92.7 1631.0,1377.0 1631.0,1416.0 1638.0,1416.7 1641.2,1434.4 1634.8,1437.7 1631.0,1438.0 1631.0,1439.6 1321.5,1596.7 1229.5,1643.3 1248.9,1680.1 1259.7,1700.5 1107.8,1702.3 933.5,1786.9 787.9,1862.7 173.1,1817.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1602/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1251.0,1630.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81533890698194,41.47470715190421]}},{"type":"Feature","properties":{"resourceCoords":[620.0,1203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81684429989838,41.47549870320797]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1603/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1603","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1603/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1603","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"155.2,80.2 403.7,1428.5 83.2,1594.0 1.0,1636.4 1.0,1640.7 10.8,1678.4 101.0,1847.0 566.9,1834.7 569.5,1851.3 1029.0,1845.8 1029.1,1855.8 1543.8,1814.7 1542.2,1254.5 1541.0,835.7 1490.2,106.7 1122.6,33.4 440.9,87.3 155.2,80.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1603/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[183.0,82.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81484118383405,41.477478026837844]}},{"type":"Feature","properties":{"resourceCoords":[1544.0,868.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81162197665645,41.476006965227306]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1604/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1604","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1604/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1604","type":"ImageService3","width":1643,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"217.8,857.0 170.4,131.7 425.0,74.8 888.5,110.6 1193.8,67.3 1508.8,143.2 1524.2,175.5 1456.1,220.8 1462.0,1810.9 1461.7,1856.1 1045.3,1846.0 664.5,1830.0 664.6,1841.0 216.2,1844.9 217.1,1273.7 217.8,857.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1604/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[659.0,163.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81053053167513,41.4773034272325]}},{"type":"Feature","properties":{"resourceCoords":[1145.0,163.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80935860573392,41.477286258953484]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1605/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1605","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1605/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1605","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"100.0,170.6 168.4,125.8 191.6,175.2 505.2,171.6 564.3,111.1 1035.3,158.0 1425.6,105.2 1422.0,1808.9 1397.5,1808.7 1136.5,1765.7 969.9,1751.6 92.8,1761.6 100.0,170.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1605/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[582.0,1756.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.807493,41.474298]}},{"type":"Feature","properties":{"resourceCoords":[1145.0,153.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.806092,41.477181]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1606/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1606","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1606/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1606","type":"ImageService3","width":1643,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1076.4,1834.1 498.9,1837.5 200.7,1838.2 184.2,126.9 305.2,104.3 637.7,52.4 1427.5,39.9 1428.2,79.2 1483.8,79.3 1493.3,1838.9 1076.4,1834.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1606/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1076.0,1840.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80337022505383,41.47414541002074]}},{"type":"Feature","properties":{"resourceCoords":[1076.0,102.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80327370842174,41.4772690923583]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1607/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1607","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1607/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1607","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1552.2,1819.5 1543.8,1324.0 1545.7,1324.0 1592.5,834.7 1548.6,115.9 1259.4,28.9 1.0,27.4 1.0,66.6 55.4,67.7 35.1,1818.5 421.6,1826.6 847.0,1836.9 846.2,1813.5 884.4,1813.8 1552.2,1819.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1607/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[866.0,1321.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80035796697668,41.47501953833902]}},{"type":"Feature","properties":{"resourceCoords":[47.0,98.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80231467693518,41.47723815731363]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1608/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1608","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"1.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1608/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1608","type":"ImageService3","width":1643,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"52.4,84.5 1524.3,48.4 1600.2,128.7 1623.9,125.6 1623.8,374.8 1603.8,507.9 1600.0,753.4 1590.8,1773.3 653.2,1777.8 76.1,1780.6 61.2,1287.2 63.0,1287.2 103.1,799.1 49.8,83.8 52.4,84.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1608/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[690.0,1778.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79722481544265,41.474094216615896]}},{"type":"Feature","properties":{"resourceCoords":[690.0,76.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79714439377695,41.477180598333895]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1609/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1609","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1609/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1609","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"192.7,1824.3 203.3,804.0 207.6,558.5 227.7,425.2 228.2,176.0 247.3,173.4 1124.9,58.3 1445.0,148.8 1445.0,1820.0 192.7,1824.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1609/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1445.0,1820.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.7920143,41.4740376]}},{"type":"Feature","properties":{"resourceCoords":[1445.0,114.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.7919397,41.4771301]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1610__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1610 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4440.8"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1610__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1610","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"973.3,1769.3 959.1,1760.1 1038.2,1073.3 983.3,99.8 267.8,58.7 59.2,108.3 72.1,1779.4 973.3,1769.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1610__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[534.1,1773.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79089655471661,41.47402756367193]}},{"type":"Feature","properties":{"resourceCoords":[534.1,98.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79079205998761,41.47706349201428]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1610__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1610 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.34"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4440.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2103.2"},{"label":"split_canvas_h","value":"3828.0"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1610__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1610","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1326.4,764.1 1272.8,799.3 1405.6,834.3 1563.8,788.2 1547.8,49.5 1470.8,113.6 1255.4,97.8 1146.8,399.2 1190.8,609.7 1286.1,650.7 1326.4,764.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1610__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1110.2,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.80451542112641,41.416383194305354]}},{"type":"Feature","properties":{"resourceCoords":[1636.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.80324582645615,41.41642016813315]}},{"type":"Feature","properties":{"resourceCoords":[1636.0,957.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.8031560845828,41.414688690998105]}},{"type":"Feature","properties":{"resourceCoords":[1110.2,957.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.80442567925306,41.41465171717031]}},{"type":"Feature","properties":{"resourceCoords":[1565.0,418.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.803378,41.4156589]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1612/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1612","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1612/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1612","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"67.0,176.2 77.1,176.7 161.3,521.1 137.8,1840.7 1.0,1837.6 1.0,1846.2 1085.9,1880.6 1086.0,1847.7 1146.4,1867.8 1334.5,1930.3 1524.0,1927.0 1568.7,1926.2 1570.0,1867.0 1579.0,331.9 1574.8,239.2 1561.2,192.5 1471.0,15.8 1379.8,15.6 1277.5,15.4 1134.0,82.9 986.8,157.3 24.4,74.7 67.0,176.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1612/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1104.0,97.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.816184,41.474408]}},{"type":"Feature","properties":{"resourceCoords":[1570.0,1867.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.815086,41.471219]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1613/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1613","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1613/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1613","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1022.6,117.5 1022.6,127.5 1543.2,91.7 1538.7,649.9 1536.0,1846.0 1495.6,1846.4 1015.8,1851.2 575.5,1851.4 130.0,1846.0 126.3,292.9 121.3,199.1 107.2,152.0 84.6,108.6 555.7,101.2 558.1,118.0 1022.6,117.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1613/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[130.0,1846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.815086,41.471219]}},{"type":"Feature","properties":{"resourceCoords":[1536.0,1846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.811749,41.471186]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1614/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1614","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1614/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1614","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1411.3,1756.0 723.5,1765.5 450.1,1841.5 199.1,1853.2 191.4,664.3 191.0,123.4 643.9,118.5 643.8,107.3 1028.4,122.5 1449.0,131.7 1447.9,660.7 1452.4,1684.8 1453.8,1752.4 1433.6,1771.9 1411.3,1756.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1614/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[648.0,666.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.810615,41.473292]}},{"type":"Feature","properties":{"resourceCoords":[1030.0,666.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.809703,41.473277]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1615/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1615","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1615/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1615","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1389.8,1801.0 1153.0,1794.0 585.5,1793.5 94.2,1801.7 93.0,1733.9 92.7,707.7 96.3,131.8 983.3,116.0 1151.8,129.2 1416.2,171.0 1465.4,171.2 1460.4,1800.0 1389.8,1801.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1615/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1153.0,1794.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.806225,41.471297]}},{"type":"Feature","properties":{"resourceCoords":[591.0,123.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.807493,41.474298]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1616/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1616","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1616/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1616","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"54.2,1793.0 57.5,177.8 331.0,178.4 907.7,177.4 1324.0,184.0 1560.0,185.9 1553.4,591.3 1563.2,1022.6 1559.2,1022.6 1550.7,1471.7 1553.7,1471.7 1563.0,1886.3 1133.5,1887.9 1047.2,1878.5 911.5,1834.4 772.2,1798.2 377.4,1787.8 54.2,1793.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1616/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[907.0,1024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.803409,41.472632]}},{"type":"Feature","properties":{"resourceCoords":[1324.0,184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.802369,41.47413]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1617/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1617","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1617/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1617","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"222.0,134.0 646.6,137.5 645.4,114.2 683.5,113.8 1531.6,107.6 1470.2,636.5 1454.5,636.6 1475.7,1176.8 1442.2,1176.3 1632.0,1599.3 1627.3,1717.8 1513.3,1774.9 1430.0,1791.7 1054.0,1800.0 927.8,1818.8 645.5,1820.1 604.6,1820.3 79.3,1824.1 68.8,1411.8 65.8,1411.8 72.8,965.2 76.8,965.2 65.6,536.4 70.9,133.2 222.0,134.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1617/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[222.0,134.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.801437,41.474111]}},{"type":"Feature","properties":{"resourceCoords":[1054.0,1800.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.799516,41.471062]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1618/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1618","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1618/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1618","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"317.4,1615.8 128.0,1189.4 161.7,1190.0 142.3,646.1 158.1,646.0 221.8,113.9 621.0,112.4 1566.3,108.8 1565.0,935.0 1558.7,1176.0 1557.1,1679.2 775.6,1689.8 800.1,1898.3 412.0,1844.4 380.6,1764.1 251.3,1765.3 312.3,1735.0 317.4,1615.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1618/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[644.0,646.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.797282054183,41.47313547582611]}},{"type":"Feature","properties":{"resourceCoords":[1072.0,118.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79623130729836,41.47407085548011]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1619/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1619","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"},{"label":"confidence","value":"1.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1619/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1619","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1076.8,1772.5 650.6,1763.5 285.3,1721.5 170.8,1718.0 172.6,1217.5 179.0,978.0 180.6,156.3 1436.0,152.0 1436.0,1357.9 1436.0,1766.0 1076.8,1772.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1619/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1436.0,1766.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.7920847,41.4711189]}},{"type":"Feature","properties":{"resourceCoords":[1436.0,152.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.7920143,41.4740376]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1620__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1620 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4754.4"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1620__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1620","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1051.8,1704.3 1041.1,1648.6 1064.4,199.4 977.9,142.2 50.2,147.9 53.7,1386.9 54.9,1798.0 544.9,1810.3 544.8,1799.6 1034.8,1824.6 1051.8,1704.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1620__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[551.8,158.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79083611453322,41.474001454448555]}},{"type":"Feature","properties":{"resourceCoords":[70.0,158.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79196832661417,41.47401918910767]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1621__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1621 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.66"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6532.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1621__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1621","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1411.0,38.7 1411.0,40.5 943.7,37.9 351.4,40.0 149.7,121.3 138.1,234.3 63.2,259.1 113.6,670.6 48.5,1010.5 270.1,1334.1 375.5,1342.4 376.1,1381.1 507.7,1439.5 476.4,1898.5 1515.7,1804.7 1529.6,1193.0 1533.5,1193.0 1510.9,590.7 1513.5,590.7 1489.5,174.4 1506.7,178.3 1498.3,41.0 1411.0,38.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1621__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":[-81.8233187375465,41.4714512919637]}},{"type":"Feature","properties":{"resourceCoords":[1633.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.81943111337979,41.47136131822754]}},{"type":"Feature","properties":{"resourceCoords":[1633.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.81957342248167,41.46786010420537]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.82346104664838,41.46795007794154]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1622/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1622","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1622/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1622","type":"ImageService3","width":1632,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"88.8,1850.7 442.1,1822.2 1599.7,1924.9 1591.8,510.6 1581.9,96.6 1581.6,73.6 471.2,56.1 471.1,47.3 1.0,44.3 1.0,48.8 88.5,50.1 95.7,190.3 78.3,186.2 98.6,611.4 95.9,611.4 112.9,1226.4 109.0,1226.4 88.8,1850.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1622/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1122.0,620.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.817355,41.470254]}},{"type":"Feature","properties":{"resourceCoords":[1122.0,1212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.817384,41.469212]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1623/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1623","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1623/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1623","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"52.8,514.0 53.0,105.3 53.7,49.5 114.4,70.2 303.7,135.0 539.9,132.8 541.8,73.2 985.8,86.1 1424.8,93.3 1628.7,94.8 1633.0,518.4 1625.0,1075.5 1621.6,1872.6 943.8,1862.2 464.4,1849.1 405.9,1948.0 317.0,1939.0 193.9,1939.0 194.1,1929.0 26.1,1909.8 52.8,514.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1623/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[486.0,1152.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81520897419,41.46929446225917]}},{"type":"Feature","properties":{"resourceCoords":[954.0,93.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.8141046009913,41.47118644120194]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1624/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1624","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.38"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1624/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1624","type":"ImageService3","width":1632,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1609.0,1930.0 1165.0,1936.0 927.0,1930.0 816.0,1937.0 579.0,1937.0 294.0,1921.0 78.0,1923.0 17.7,1926.9 14.6,1114.0 18.1,533.2 10.1,91.6 296.4,91.3 338.4,91.2 601.2,83.7 888.5,9.2 1608.0,12.0 1616.1,18.0 1617.0,29.0 1631.0,29.0 1631.0,1142.2 1627.5,1231.5 1627.3,1277.4 1621.0,1278.0 1621.0,1294.0 1627.2,1294.6 1626.7,1419.0 1614.1,1906.6 1612.0,1908.0 1609.0,1930.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1624/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1216.0,644.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.8097509,41.4702339]}},{"type":"Feature","properties":{"resourceCoords":[1216.0,-2.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.8097445,41.471339]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1625/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1625","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1625/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1625","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1273.6,1832.5 549.4,1808.4 549.6,1827.4 33.0,1832.2 42.4,1437.0 78.3,1297.4 122.1,1161.5 131.3,1075.0 125.2,116.2 125.0,75.0 1203.5,74.2 1533.1,71.1 1553.4,1099.6 1539.1,1099.9 1635.0,1222.7 1635.0,1855.0 1273.8,1842.6 1273.6,1832.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1625/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1394.0,1836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.804795,41.468828]}},{"type":"Feature","properties":{"resourceCoords":[125.0,75.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.800504,41.471042]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1626/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1626","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1626/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1626","type":"ImageService3","width":1632,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1107.3,1828.3 53.2,1849.7 53.0,1830.2 41.5,1342.2 38.2,778.6 43.5,543.3 34.9,149.6 551.7,143.1 551.5,124.0 1276.0,145.8 1276.2,155.8 1631.0,166.8 1631.0,1279.0 1621.0,1280.0 1623.0,1339.0 1631.0,1339.0 1631.0,1390.0 1622.0,1391.0 1622.0,1418.0 1631.0,1419.0 1631.0,1465.0 1622.0,1466.0 1621.0,1550.0 1622.0,1626.0 1631.0,1627.0 1631.0,1648.0 1622.0,1649.0 1620.0,1770.0 1631.0,1771.0 1631.0,1792.0 1621.0,1793.0 1620.0,1821.0 1631.0,1822.0 1631.0,1828.8 1395.1,1827.5 1216.6,1830.3 1107.3,1828.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1626/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[564.0,158.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80476763866145,41.470324509958914]}},{"type":"Feature","properties":{"resourceCoords":[1401.0,150.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80479799300919,41.46881994114349]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1627/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1627","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1627/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1627","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"41.8,1146.2 52.8,74.0 335.3,76.0 461.9,58.6 838.4,54.7 921.9,38.9 975.9,12.6 1104.4,12.4 1135.0,92.5 1520.5,149.3 1576.8,665.0 1598.8,663.8 1517.6,1270.1 1464.8,1269.2 1460.9,1572.2 1438.8,1571.5 1351.4,1539.8 1265.9,1705.4 942.8,1560.1 845.5,1528.0 685.2,1488.2 531.3,1466.0 41.3,1473.8 41.8,1146.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1627/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1344.0,1563.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79742453891289,41.46832414304688]}},{"type":"Feature","properties":{"resourceCoords":[1103.0,-21.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.7979663422484,41.47119390651386]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1628/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1628","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1628/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1628","type":"ImageService3","width":1631,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"72.7,1695.6 532.4,1889.1 545.7,1894.7 545.2,1872.3 1069.6,1869.1 1070.3,1899.3 1303.9,1897.0 1552.5,1891.2 1560.8,1935.3 1573.9,1935.2 1600.6,295.4 1549.6,34.4 1541.3,94.3 1297.2,82.5 1297.2,87.8 1053.1,82.3 1053.1,86.4 869.3,90.7 651.3,87.3 464.2,66.8 405.7,65.3 8.1,72.8 53.3,442.2 64.5,441.5 27.0,752.2 1.0,752.1 1.0,907.2 52.8,908.3 99.6,907.2 68.3,1202.6 60.2,1220.5 39.2,1460.3 35.8,1458.9 72.7,1695.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1628/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1061.0,1158.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79216604267798,41.467330938529265]}},{"type":"Feature","properties":{"resourceCoords":[1554.0,924.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.78981483959899,41.468117096207024]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1629/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1629","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1629/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1629","type":"ImageService3","width":1624,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1587.0,231.3 1583.0,257.0 1554.3,461.4 1523.2,659.4 1501.5,785.3 1478.1,937.9 1450.9,1104.1 1407.8,1356.4 1374.7,1504.4 1342.5,1665.6 1308.0,1828.6 1084.0,1807.2 653.6,1820.2 268.3,1805.7 196.4,1789.7 193.6,1802.8 58.8,1797.8 28.9,1633.1 52.9,1523.1 59.4,1126.5 29.1,609.8 108.9,113.4 632.7,60.4 1014.7,86.0 1572.1,70.2 1587.0,231.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1629/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[796.0,1175.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.819915,41.44995]}},{"type":"Feature","properties":{"resourceCoords":[1583.0,257.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.816068,41.453168]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1630/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1630","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"24"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1630/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1630","type":"ImageService3","width":1638,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"801.3,1620.6 800.0,1486.0 805.5,1289.6 803.8,1189.9 516.4,1078.2 449.8,1078.6 202.8,1072.2 206.9,1046.3 193.1,884.6 217.0,884.1 259.6,436.4 121.3,309.6 108.6,218.5 106.9,206.1 142.8,207.2 352.7,138.2 358.6,99.8 1455.7,164.9 1457.6,165.7 1443.4,242.3 1432.7,412.9 1470.0,418.4 1469.7,450.8 1467.0,829.5 1468.0,893.0 1467.7,1257.6 1488.9,1347.3 1552.1,1536.6 1394.0,1579.7 1147.8,1642.0 1153.5,1664.0 1155.3,1671.1 1073.1,1670.6 1071.4,1661.3 1034.3,1667.8 915.0,1698.8 820.2,1726.9 801.3,1620.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1630/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1468.0,893.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.810045,41.453739]}},{"type":"Feature","properties":{"resourceCoords":[800.0,1486.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81326,41.451663]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1631__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1631 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.91"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2564.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3931.6"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1631__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1631","type":"ImageService3","width":1624,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"852.1,1747.9 1017.7,1702.9 1551.3,1566.1 1557.7,436.5 1417.3,269.1 707.3,78.2 702.0,333.2 702.1,460.0 691.4,1188.2 731.2,1367.9 852.1,1747.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1631__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[702.1,460.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.810045,41.453739]}},{"type":"Feature","properties":{"resourceCoords":[1536.0,1570.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.808064,41.451759]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1631__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1631 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.41"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4466.0"},{"label":"split_canvas_w","value":"3046.4"},{"label":"split_canvas_h","value":"3330.0"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1631__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1631","type":"ImageService3","width":1624,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"704.9,1410.8 620.7,1246.2 365.1,1195.9 25.9,1261.8 19.4,1852.8 311.2,1926.2 437.3,1870.0 634.3,1919.0 738.5,1854.9 704.9,1410.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1631__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1116.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.83626169842432,41.43515108387581]}},{"type":"Feature","properties":{"resourceCoords":[761.6,1116.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.83630523956823,41.43655110253723]}},{"type":"Feature","properties":{"resourceCoords":[761.6,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.83427809475776,41.43658703847193]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.83423455361387,41.435187019810506]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1632/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1632","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1632/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1632","type":"ImageService3","width":1638,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1491.5,1561.2 842.7,1744.1 220.3,1926.0 92.0,1927.2 75.7,1927.4 45.8,855.5 3.9,808.9 370.5,175.1 424.9,236.6 1003.0,152.8 1002.0,89.0 1035.2,88.6 1567.5,82.1 1597.3,857.2 1568.0,895.8 1586.8,1534.2 1514.6,1562.2 1491.5,1561.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1632/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1012.0,102.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80561588405433,41.45508182446909]}},{"type":"Feature","properties":{"resourceCoords":[816.0,1767.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80622740557197,41.45208317689971]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1633/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1633","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1633/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1633","type":"ImageService3","width":1628,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1327.4,1633.3 1382.3,1895.3 1539.5,1929.7 1579.0,1928.0 1600.0,1931.0 1608.0,1923.0 1624.0,1923.0 1627.0,1928.0 1627.0,1571.9 1605.7,1552.3 1551.2,1567.7 1548.9,230.2 1373.7,227.2 1212.0,221.8 1079.7,175.5 975.5,87.8 868.6,218.3 794.8,111.8 718.0,1.0 373.6,1.0 362.9,1.4 1.0,513.5 1.0,514.9 47.8,515.0 75.4,1291.9 46.0,1330.5 61.7,1927.7 134.0,1932.0 197.3,1932.7 347.9,1890.5 485.9,1851.8 925.6,1730.8 1117.0,1682.3 1327.4,1633.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1633/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1288.0,1636.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.8013734040962,41.45298971055663]}},{"type":"Feature","properties":{"resourceCoords":[-635.0,2156.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80604253693888,41.452160939729566]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1634/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1634","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1634/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1634","type":"ImageService3","width":1638,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1617.5,1533.9 1633.8,1529.3 1521.1,1529.8 1461.6,834.4 1484.6,789.9 1499.7,1.0 1311.0,1.0 1311.0,16.0 1299.0,19.0 1061.3,15.6 1008.3,33.6 899.0,87.0 840.2,13.2 824.2,13.2 823.3,13.2 353.3,380.4 341.0,626.0 307.9,625.3 113.1,621.3 111.9,1927.7 333.0,1927.0 581.0,1939.0 582.0,1948.0 856.0,1948.0 857.0,1939.0 993.0,1935.0 1186.0,1939.0 1187.0,1948.0 1198.0,1948.0 1199.0,1939.0 1421.0,1936.4 1423.8,1804.7 1617.5,1533.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1634/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[341.0,626.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.800088,41.455491]}},{"type":"Feature","properties":{"resourceCoords":[341.0,1890.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.8001763,41.4532017]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1635/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1635","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.49"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1635/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1635","type":"ImageService3","width":1630,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1596.7,1594.7 1596.7,1581.5 1596.7,1556.6 1550.1,1569.6 1608.0,338.0 1570.8,103.5 1527.3,156.6 1480.1,45.9 1279.0,50.5 1264.2,75.0 1219.3,51.8 518.0,23.0 516.1,1.0 81.8,1.0 81.2,393.3 60.9,1194.6 37.6,1238.9 92.8,1935.2 209.9,1934.2 704.6,1799.6 942.5,1739.2 1437.5,1601.2 1483.0,1588.4 1596.7,1594.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1635/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.79741758796332,41.457299168789376]}},{"type":"Feature","properties":{"resourceCoords":[1630.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.79348133660764,41.45723225636742]}},{"type":"Feature","properties":{"resourceCoords":[1630.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.79358807127672,41.453704224213354]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.7975243226324,41.45377113663531]}},{"type":"Feature","properties":{"resourceCoords":[60.0,1229.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79734,41.455072]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1636__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1636 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6552.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1636__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1636","type":"ImageService3","width":1638,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1554.8,1633.9 1592.8,1590.7 1609.3,1547.5 1597.5,160.8 1551.8,86.5 1296.5,126.0 1130.2,30.3 747.2,78.4 645.7,585.9 645.7,619.5 639.0,619.5 624.5,691.6 211.3,732.5 205.6,692.1 129.4,1925.2 176.6,1912.8 176.4,1923.3 1554.8,1633.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1636__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.79403092218588,41.457874957208006]}},{"type":"Feature","properties":{"resourceCoords":[1638.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.79010950853348,41.45784982918462]}},{"type":"Feature","properties":{"resourceCoords":[1638.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.79014912274319,41.45432818178055]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.7940705363956,41.454353309803935]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1637/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1637","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1637/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1637","type":"ImageService3","width":1630,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"503.3,1238.8 554.1,945.9 615.0,447.4 1558.9,145.3 1562.8,223.6 1578.3,912.1 1572.9,912.5 1586.3,1646.5 1629.0,1648.6 1629.0,1728.6 1629.0,1801.7 400.9,1892.3 403.0,1880.2 422.0,1763.2 455.4,1557.6 503.3,1238.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1637/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[545.0,948.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81704048091963,41.449251186742124]}},{"type":"Feature","properties":{"resourceCoords":[393.0,1882.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.8175674620617,41.44757306314962]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1638__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1638 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6576.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1638__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1638","type":"ImageService3","width":1644,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"136.3,1850.2 260.7,1856.4 250.9,1241.0 730.3,1241.0 781.2,1418.3 784.2,1882.6 1250.6,1906.0 1568.4,1908.2 1602.8,1910.8 1582.7,1167.0 1544.9,940.8 1476.2,707.3 1273.5,17.8 1265.0,17.0 1264.6,14.1 1263.4,14.2 1263.0,17.0 1188.0,17.0 1187.8,16.1 1111.0,18.0 1107.0,16.0 1107.0,1.0 1102.1,1.0 1088.6,3.8 1088.0,10.0 1073.0,10.0 1072.0,15.0 1056.0,15.0 1051.6,11.3 1047.5,12.2 1047.0,15.0 1034.7,14.8 802.4,83.1 618.2,144.2 101.7,291.2 103.7,369.9 103.0,1061.7 97.5,1061.9 93.6,1799.2 136.4,1802.4 136.3,1850.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1638__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[100.0,282.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.8144489804719,41.450597861920635]}},{"type":"Feature","properties":{"resourceCoords":[1730.0,1849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.8106841997713,41.4476219689167]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1639__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1639 [1]","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.97"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6520.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1639__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1639","type":"ImageService3","width":1630,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1160.5,1854.7 1201.0,1740.0 1205.6,1573.6 1201.5,1584.3 1220.6,1380.8 1236.6,1379.4 1234.1,1324.2 1225.9,1324.6 1245.5,1116.4 1202.2,1117.0 1384.9,999.9 1385.0,1114.5 1475.5,1112.6 1473.2,969.2 1550.7,749.9 1550.8,705.4 1557.5,672.3 1551.0,669.4 1554.2,660.8 1571.0,617.0 1584.0,26.4 1579.2,26.1 1572.3,25.8 1239.1,114.9 879.1,215.0 845.7,214.6 845.8,224.2 578.3,298.6 495.3,323.0 336.4,367.4 89.0,431.8 96.8,460.9 224.6,939.6 241.1,1056.0 241.9,1437.6 224.3,1435.8 142.9,1433.2 132.1,1453.2 133.3,1499.4 67.4,1500.2 82.7,1856.0 115.6,1855.6 393.6,1858.4 625.8,1854.9 1119.6,1854.9 1160.5,1854.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1639__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[242.0,1498.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.811004,41.447307]}},{"type":"Feature","properties":{"resourceCoords":[1100.0,1855.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.806992,41.44598]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1639__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1639 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.38"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3650.8"},{"label":"split_canvas_w","value":"852.0"},{"label":"split_canvas_h","value":"1757.2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1639__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1639","type":"ImageService3","width":1630,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"49.7,936.4 48.2,1284.2 181.6,1284.0 169.9,936.0 49.7,936.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1639__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[57.0,1301.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81239270220601,41.44599650347846]}},{"type":"Feature","properties":{"resourceCoords":[57.0,945.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81237236349955,41.44728211498174]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1640/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1640","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1640/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1640","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"396.8,131.3 673.4,134.9 904.5,132.1 1395.8,133.6 1490.9,133.4 1551.4,1023.8 1555.1,1335.6 1602.8,1661.1 1522.4,1829.5 1462.4,1872.4 604.4,1865.3 103.9,1901.1 49.8,1845.2 41.9,1619.7 137.0,1543.3 181.0,1543.7 332.1,1381.8 287.2,1362.9 284.7,1157.0 289.4,1157.0 250.2,955.9 196.6,955.4 196.1,652.6 125.1,655.2 165.2,133.5 228.6,132.7 396.8,131.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1640/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[672.0,965.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81040365576226,41.44307070397127]}},{"type":"Feature","properties":{"resourceCoords":[123.0,137.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81293497652186,41.44604952339291]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1641/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1641","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1641/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1641","type":"ImageService3","width":1648,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1638.6,1466.7 1647.0,1466.6 1647.0,1427.3 1512.4,793.3 1525.8,793.0 1643.4,791.3 1647.0,791.2 1647.0,415.4 1472.2,376.6 1402.2,31.5 1191.1,79.2 999.1,126.5 557.7,244.7 527.9,252.8 419.2,282.5 268.0,323.9 204.7,322.7 132.3,317.9 133.2,360.7 60.5,380.5 38.9,1547.3 12.6,1617.1 18.0,1618.0 18.0,1634.0 6.4,1633.3 1.0,1647.7 1.0,1650.8 13.0,1656.0 16.0,1684.0 8.0,1694.0 5.4,1694.0 4.1,1700.5 9.0,1701.0 9.0,1720.0 1.0,1720.9 1.0,1805.5 7.7,1786.4 576.2,1881.0 576.2,1874.8 1377.8,1699.4 1377.8,1543.6 1377.7,1469.7 1410.6,1469.3 1514.2,1468.1 1551.2,1467.7 1647.0,1870.1 1647.0,1848.8 1647.0,1831.2 1562.1,1467.5 1581.7,1467.3 1647.0,1753.5 1647.0,1693.4 1647.0,1651.1 1606.5,1467.0 1637.8,1466.7 1638.6,1466.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1641/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[585.0,244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80325524689623,41.452646106477076]}},{"type":"Feature","properties":{"resourceCoords":[1372.0,38.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80135122690125,41.452981923632976]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1643/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1643","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.50"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1643/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1643","type":"ImageService3","width":1648,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1.0,671.4 1.0,1354.1 9.0,1355.0 9.0,1372.0 1.0,1372.9 1.0,1545.0 309.4,1605.0 433.9,1599.8 1647.0,1841.4 1636.3,1506.8 1610.7,893.4 1598.8,528.4 1585.6,34.6 1585.0,13.2 1471.2,10.1 1426.1,24.1 935.2,176.0 699.1,243.0 208.3,391.5 187.9,397.7 1.0,671.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1643/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.79747128438605,41.45451626494858]}},{"type":"Feature","properties":{"resourceCoords":[1648.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.79349565229182,41.45436511597124]}},{"type":"Feature","properties":{"resourceCoords":[1648.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.79373412263035,41.45084070701424]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.79770975472458,41.450991855991575]}},{"type":"Feature","properties":{"resourceCoords":[1584.0,-25.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.793647,41.454416]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1644__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1644 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3252.4"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1644__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1644","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"738.8,1841.0 743.6,1767.3 773.5,1721.5 751.0,1368.4 779.5,1182.0 761.0,99.5 763.4,96.8 67.1,245.1 66.8,270.1 63.3,522.0 61.8,708.1 62.1,1021.1 61.3,1244.3 63.0,1244.3 88.4,1834.0 661.5,1840.2 738.8,1841.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1644__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[61.0,991.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.7937122132444,41.4517484292752]}},{"type":"Feature","properties":{"resourceCoords":[767.1,1817.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79040682655611,41.448789780714534]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1644__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1644 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.78"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3252.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3335.6"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1644__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1644","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"886.0,949.5 889.3,1861.6 1026.0,1902.2 1442.8,1914.2 1573.9,1877.7 1583.0,1864.8 1600.2,1189.4 1537.0,356.5 1552.5,126.8 1475.3,125.7 889.6,118.0 874.0,117.8 874.5,185.7 870.0,332.3 911.6,332.2 922.8,949.8 889.7,949.5 886.0,949.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1644__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1575.0,1179.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79047301866729,41.44495779303449]}},{"type":"Feature","properties":{"resourceCoords":[1575.0,137.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79043513655627,41.44866834160663]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1645/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1645","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.66"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1645/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1645","type":"ImageService3","width":1648,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1195.8,1826.8 871.1,1812.1 577.5,1919.6 467.8,1922.5 119.3,1846.7 61.6,1478.1 53.6,1044.9 110.7,619.2 98.8,75.7 339.8,48.1 476.3,56.1 479.5,42.9 552.0,60.5 942.3,83.3 1378.9,79.3 1605.5,105.7 1601.6,121.2 1521.3,483.2 1464.0,753.2 1400.5,1037.8 1392.2,1062.6 1306.4,1455.4 1289.2,1536.5 1281.0,1558.8 1225.4,1806.6 1220.8,1822.5 1195.8,1826.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1645/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.82509145645292,41.44795451952263]}},{"type":"Feature","properties":{"resourceCoords":[1648.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.81734247135269,41.44794992172608]}},{"type":"Feature","properties":{"resourceCoords":[1648.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.81734967455498,41.44103195882786]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-81.82509865965521,41.44103655662441]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1646/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1646","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1646/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1646","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"261.6,1739.3 39.7,1738.1 12.2,1741.0 16.6,1725.3 69.8,1480.5 77.8,1458.5 94.2,1378.3 176.4,990.4 184.4,965.9 245.2,684.7 299.9,418.1 376.9,60.5 379.1,51.2 1003.2,45.2 1005.1,15.9 1005.4,10.7 1183.0,12.0 1183.3,8.0 1186.0,8.2 1187.0,12.0 1227.0,11.9 1566.8,42.7 1646.0,46.5 1646.0,48.3 1636.0,66.0 1636.5,111.4 1451.1,110.9 1447.5,460.6 1384.9,460.7 1338.8,975.7 1409.0,974.0 1405.7,1273.1 1458.7,1274.3 1495.0,1473.5 1490.3,1473.5 1490.2,1677.0 1534.4,1696.2 1383.1,1854.2 1339.6,1853.3 1244.7,1927.6 1244.5,1921.8 948.2,1912.3 947.9,1929.0 945.3,1929.0 932.8,1928.8 933.2,1844.6 703.7,1841.9 275.6,1765.5 261.6,1739.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1646/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[949.0,1273.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.814849,41.443146]}},{"type":"Feature","properties":{"resourceCoords":[1409.0,974.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.812633,41.444212]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1647/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1647","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1647/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1647","type":"ImageService3","width":1640,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"12.0,1560.3 12.0,1569.0 1.0,1569.9 1.0,1570.4 281.0,1613.0 283.8,1606.8 857.4,1605.2 1084.3,1827.1 1083.0,1843.7 1082.4,1931.6 1087.2,1931.8 1086.8,1900.5 1313.6,1917.8 1554.0,1870.7 1584.7,1568.3 1584.0,281.4 1584.0,261.3 1568.7,261.4 1567.7,176.8 1336.8,178.1 905.1,108.8 890.6,82.7 667.5,85.4 639.8,88.8 615.3,93.6 295.2,86.2 8.3,199.3 47.3,197.4 39.2,337.2 93.3,713.0 50.0,1283.5 85.3,1339.3 94.2,1557.8 12.0,1560.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1647/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[452.0,1039.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.82036,41.438099]}},{"type":"Feature","properties":{"resourceCoords":[1568.0,1323.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.815067,41.43699]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1648/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1648","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1648/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1648","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"513.8,68.8 797.9,111.0 800.7,104.8 1380.4,101.1 1610.5,324.6 1609.2,341.4 1608.9,430.1 1613.7,430.3 1627.7,1503.6 1604.1,1904.4 1421.7,1928.4 121.2,1917.5 43.5,1866.2 68.6,1663.5 25.8,1203.5 34.0,513.4 87.2,222.3 75.6,74.0 525.9,58.7 513.8,68.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1648/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[815.0,1575.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.82134441183251,41.43087688530615]}},{"type":"Feature","properties":{"resourceCoords":[1601.0,693.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.81752225924194,41.43392410762604]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1651/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1651","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1651/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1651","type":"ImageService3","width":1640,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"113.0,1246.0 98.1,1323.2 86.1,1495.2 123.7,1500.9 123.2,1533.5 119.7,1786.7 478.9,1880.5 528.2,1938.6 530.3,1938.7 725.9,1620.3 752.9,1652.6 1050.1,1617.5 1050.5,1584.8 1067.5,1585.0 1315.6,1588.6 1507.4,1330.2 1513.7,1330.2 1558.1,1318.5 1626.9,1274.8 1639.0,1258.0 1582.0,1165.5 1520.2,598.2 1508.2,578.9 1516.1,328.0 1590.4,329.6 1609.8,330.0 1635.5,330.6 1627.5,312.5 1466.7,9.0 1201.0,9.0 1200.1,1.0 1194.9,1.0 1194.0,10.0 1150.0,10.0 1148.2,1.0 231.9,1.0 201.8,30.9 158.7,2.3 147.6,1.0 139.1,1.0 138.7,13.6 123.3,585.8 119.6,937.8 113.2,964.2 90.5,987.4 90.1,987.4 62.6,1223.7 102.0,1241.1 113.0,1246.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1651/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1229.0,317.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80474959267552,41.459577508774835]}},{"type":"Feature","properties":{"resourceCoords":[1058.0,1330.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.8055937514463,41.45600550522042]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1652/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1652","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1652/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1652","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1597.6,1301.6 1567.7,998.6 1550.4,999.3 1539.4,962.2 1518.6,916.2 1495.2,875.7 1442.3,810.6 1374.5,594.5 1404.9,567.4 1361.7,213.8 1402.2,212.8 1313.5,22.1 150.9,43.5 134.8,58.8 58.3,60.3 16.5,63.8 1.0,74.1 1.0,395.2 175.3,705.1 183.6,722.7 158.3,722.8 65.9,723.1 64.3,970.5 76.6,989.3 151.5,1546.8 214.1,1642.8 198.4,1653.3 131.7,1698.1 89.9,1710.2 260.6,1710.0 299.8,1766.2 337.1,1819.8 390.8,1754.0 443.4,1798.1 510.1,1821.3 591.6,1823.9 778.4,1827.0 795.1,1827.2 800.9,1703.0 1037.8,1516.3 1046.3,1516.2 1076.2,1553.5 1131.4,1526.2 1181.3,1509.0 1379.8,1508.2 1380.0,1502.6 1378.2,1303.9 1597.6,1301.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1652/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[169.0,47.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80279802394126,41.46193893042185]}},{"type":"Feature","properties":{"resourceCoords":[355.0,1828.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80219088657348,41.455540409848965]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1653__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1653 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.73"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6552.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1653__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1653","type":"ImageService3","width":1638,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"475.6,1863.4 480.6,1825.6 1557.0,1866.1 1548.0,1862.4 1509.2,1846.5 1529.9,1616.2 1551.3,1593.1 1556.8,1567.2 1550.7,1225.1 1549.8,668.8 1549.8,645.4 1568.8,657.2 1611.5,683.9 1637.0,657.1 1637.0,344.2 1354.0,207.2 1322.0,208.0 1319.1,270.8 1052.1,252.1 1056.2,244.8 769.3,153.8 733.8,131.7 734.3,128.9 531.0,210.3 531.0,214.7 591.1,214.3 603.1,540.9 540.5,658.4 411.3,681.6 365.1,739.1 302.0,741.4 297.1,812.1 360.4,813.5 402.8,956.9 382.1,1307.0 342.1,1342.8 342.1,1344.7 340.0,1344.7 338.9,1345.7 171.7,1344.3 65.1,1378.0 43.4,1494.0 59.8,1842.6 124.7,1888.5 228.7,1888.5 236.2,1935.1 271.5,1935.4 475.6,1863.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1653__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1322.0,208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.810897,41.462383]}},{"type":"Feature","properties":{"resourceCoords":[617.0,935.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.814441,41.459837]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1654/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1654","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1654/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1654","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"550.0,1570.2 585.5,1593.2 874.0,1690.5 869.7,1697.8 1139.4,1721.6 1143.5,1658.2 1175.9,1658.0 1460.6,1802.3 1458.1,1937.0 1490.0,1936.8 1520.6,1919.5 1580.6,1912.5 1618.9,1913.0 1619.0,1912.0 1635.0,1912.0 1635.0,819.0 1625.0,819.0 1623.0,809.0 1609.0,807.0 1610.0,790.0 1635.0,790.0 1635.0,768.0 1612.0,766.0 1612.0,749.0 1621.0,748.0 1623.0,740.0 1635.0,740.0 1635.0,22.0 1624.0,20.0 1624.0,1.0 1541.4,1.0 1539.6,67.5 1538.3,78.0 1326.9,83.8 1213.5,82.6 1160.7,86.6 1047.8,88.2 911.9,82.5 780.3,87.1 780.5,95.8 443.8,98.1 205.7,96.9 177.7,146.6 133.4,143.2 72.3,144.5 79.7,954.6 104.7,1085.7 143.0,1130.0 145.5,1265.2 119.6,1288.2 141.2,1441.9 104.8,1502.7 110.1,1589.0 280.2,1649.7 332.1,1650.3 550.6,1567.4 550.0,1570.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1654/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[919.0,1068.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.811921,41.464517]}},{"type":"Feature","properties":{"resourceCoords":[919.0,396.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.811862,41.46693]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1655/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1655","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1655/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1655","type":"ImageService3","width":1640,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"328.4,946.8 345.1,936.4 102.5,934.9 39.8,937.7 44.9,728.2 35.8,728.2 60.5,358.8 49.8,351.0 67.4,148.7 80.6,151.2 311.2,11.9 573.2,122.8 586.4,128.3 586.0,106.2 1107.0,104.0 1107.7,134.0 1339.7,132.1 1586.7,126.8 1594.9,170.8 1607.6,184.3 1576.6,1879.7 1308.1,1912.0 1152.0,1885.0 287.9,1903.5 290.6,1934.7 273.2,1935.2 262.5,1897.7 242.2,1851.2 219.2,1810.1 166.7,1744.0 100.9,1525.6 131.8,1498.8 92.5,1142.2 133.2,1141.8 46.1,948.7 328.4,946.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1655/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1349.0,141.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79105896095244,41.4646667321563]}},{"type":"Feature","properties":{"resourceCoords":[1124.0,669.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79218094135364,41.46280546710202]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1656/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1656","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1656/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1656","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"18.0,1923.0 60.0,1921.0 136.8,1922.3 153.4,1907.6 1600.2,1934.5 1601.0,1928.0 1612.6,1927.3 1617.2,1924.6 1375.6,1917.0 1313.1,1918.2 1323.5,1709.7 1314.3,1709.5 1348.4,1342.3 1337.8,1334.2 1360.5,1133.2 1373.7,1136.1 1606.8,1003.1 1415.3,916.2 1385.3,681.1 1388.6,682.6 1415.9,445.9 1424.4,428.5 1463.4,137.1 1417.0,136.9 1353.7,133.8 1309.7,117.2 1265.2,200.4 1102.6,124.5 1053.6,107.5 972.7,86.1 895.0,73.8 646.8,74.2 128.8,71.3 128.9,64.1 65.2,111.2 1.0,109.6 1.0,1933.4 18.0,1923.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1656/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1491.0,289.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79653847984561,41.4677547205001]}},{"type":"Feature","properties":{"resourceCoords":[1157.0,1508.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79810740722414,41.46339546176156]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1657/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1657","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1657/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1657","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1583.9,1306.1 1583.1,1295.6 1509.8,1296.3 1502.2,1296.3 1242.4,1.0 1217.6,1.0 1236.9,93.7 1236.3,145.6 1205.0,1.0 1195.1,1.0 1235.9,185.2 1235.7,204.8 1189.6,1.0 1101.2,1.0 1100.8,37.5 1100.0,116.6 692.0,201.1 691.9,204.2 403.8,152.9 320.9,382.0 322.1,525.0 268.9,525.7 232.0,526.2 232.7,411.9 49.8,527.2 92.8,527.0 71.8,734.3 80.0,734.0 82.0,789.0 66.1,790.2 45.5,992.9 49.7,982.2 43.8,1148.1 2.5,1262.0 57.1,1262.2 99.7,1935.8 111.4,1935.6 112.0,1935.6 111.5,1881.3 407.8,1858.3 518.8,1913.8 1161.5,1927.8 1366.5,1909.9 1411.5,1863.7 1532.8,1839.2 1570.3,1796.9 1582.8,1602.8 1605.6,1598.7 1583.9,1306.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1657/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[695.0,357.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80336968343569,41.449155093853626]}},{"type":"Feature","properties":{"resourceCoords":[1107.0,357.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.80141890372464,41.44913520753413]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1658/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1658","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1658/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1658","type":"ImageService3","width":1638,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"320.6,1646.2 323.0,1645.7 1628.0,1389.5 1628.0,1382.0 1627.6,1309.3 1555.3,1314.4 1547.8,914.5 1599.4,785.7 1608.0,502.6 1578.3,159.6 1613.1,159.4 1613.2,155.7 1613.4,122.7 998.5,134.9 998.6,176.4 852.6,172.2 785.0,172.8 785.1,157.2 785.3,143.0 199.6,167.9 199.6,169.5 147.7,169.3 1.0,774.6 1.0,1708.9 320.6,1646.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1658/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1083.0,788.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79671353110696,41.44771096293326]}},{"type":"Feature","properties":{"resourceCoords":[781.0,180.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.79379921180865,41.448770332644024]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1659/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cleveland, Ohio | 1950 | sanborn06648_050 p1659","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:31Z","modified":"2026-10-18T18:35:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1659/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1659","type":"ImageService3","width":1626,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1039.8,1547.1 75.4,1802.4 130.0,1474.5 177.2,1173.2 220.7,924.8 283.4,534.1 341.2,130.8 827.2,141.4 958.3,140.2 1524.7,357.5 1528.8,553.7 1519.5,940.2 1523.1,1204.9 1561.2,1414.0 1039.8,1547.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g06648195016:06648_16_1950-1659/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[777.0,553.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.815035,41.452389]}},{"type":"Feature","properties":{"resourceCoords":[1520.0,135.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.813222,41.45312]}}]}}]}