{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn05757_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Ballston Spa, New-York | 1897 | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"21"},{"label":"placed","value":"12"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef 11, georef-snap 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"8 sheet(s) cut into 18 panels"},{"label":"unplaced pages","value":"p1 (tier 3, 43.00717,-73.85082 +/-351m); p10__2 (tier 1, 43.00441,-73.85020 +/-100m); p11__1 (tier 1, 43.01139,-73.85940 +/-105m); p2__1 (tier 1, 43.00123,-73.84720 +/-105m); p3__1 (tier 2, 43.00232,-73.85244 +/-100m); p3__2 (tier 1, 43.00054,-73.85482 +/-100m); p5__2 (tier 1, 43.00388,-73.84864 +/-100m); p6__2 (tier 1, 43.00595,-73.85202 +/-106m); p8__1 (tier 1, 43.01053,-73.85229 +/-117m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0010__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ballston Spa, New-York | 1897 | sanborn05757_003 p10 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2758.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4894.0"}],"created":"2026-09-23T19:25:46Z","modified":"2026-09-23T19:25:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0010__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1125.0,1729.6 1528.2,1575.7 1569.8,689.7 0.0,697.3 -0.0,1913.0 1120.9,1912.8 1125.0,1729.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0010__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1553.0,962.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.850309,43.00449]}},{"type":"Feature","properties":{"resourceCoords":[1125.0,1730.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.8510915,43.0030392]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0011__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ballston Spa, New-York | 1897 | sanborn05757_003 p11 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"3244.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3207.6"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T19:25:46Z","modified":"2026-09-23T19:25:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0011__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"811.1,-0.0 818.7,1913.0 950.0,1913.0 1613.0,1913.0 1613.0,387.8 1087.8,0.0 811.1,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0011__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[811.1,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-73.85977771976819,43.01169768019749]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-73.85779558388928,43.01132449207813]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-73.8590131188356,43.0078677975656]}},{"type":"Feature","properties":{"resourceCoords":[811.1,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-73.86099525471451,43.008240985684964]}},{"type":"Feature","properties":{"resourceCoords":[1188.0,76.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.858894,43.011384]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ballston Spa, New-York | 1897 | sanborn05757_003 p2 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"3197.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3254.4"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T19:25:46Z","modified":"2026-09-23T19:25:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"799.8,64.1 799.7,586.2 799.4,1913.0 922.0,1913.0 1613.0,1913.0 1613.0,216.2 1398.2,214.4 947.2,63.0 799.8,64.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1203.2,1515.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.845678,43.00102]}},{"type":"Feature","properties":{"resourceCoords":[1203.2,138.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.848747,43.000822]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0002__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ballston Spa, New-York | 1897 | sanborn05757_003 p2 [3]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2344.8"},{"label":"split_canvas_w","value":"3198.8"},{"label":"split_canvas_h","value":"5307.2"}],"created":"2026-09-23T19:25:46Z","modified":"2026-09-23T19:25:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0002__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"31.8,1913.0 32.5,1833.0 421.9,1831.0 421.9,1721.1 799.5,1719.3 799.6,1077.0 704.9,1076.5 732.0,586.5 0.0,590.3 0.0,1913.0 31.8,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0002__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[421.9,1075.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.853434,43.000471]}},{"type":"Feature","properties":{"resourceCoords":[421.9,1831.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.851547,43.0006182]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0003__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ballston Spa, New-York | 1897 | sanborn05757_003 p3 [3]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2482.8"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"5169.2"}],"created":"2026-09-23T19:25:46Z","modified":"2026-09-23T19:25:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0003__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 895.8,1913.0 892.0,1819.4 1526.2,1790.6 1501.0,1209.4 1613.0,1204.5 1613.0,1066.5 852.1,1121.5 826.1,761.6 752.9,749.0 0.0,620.7 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0003__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[880.0,1470.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.8536143,43.0018077]}},{"type":"Feature","properties":{"resourceCoords":[1501.0,1209.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.8520803,43.0023617]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ballston Spa, New-York | 1897 | sanborn05757_003 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T19:25:46Z","modified":"2026-09-23T19:25:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1361.2,1817.5 1362.1,1913.0 330.8,1913.0 324.8,1531.8 216.5,1532.7 205.9,586.5 631.6,581.6 627.1,264.4 1005.7,105.1 1500.1,87.0 1502.7,911.0 1613.0,912.5 1613.0,1173.6 1501.0,1172.5 1498.0,1360.0 1361.2,1817.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-73.85274617286683,43.0034194642845]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-73.8486572136617,43.003710910806674]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-73.84818789166849,43.000139317883445]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-73.85227685087362,42.99984787136127]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ballston Spa, New-York | 1897 | sanborn05757_003 p5 [1]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T19:25:46Z","modified":"2026-09-23T19:25:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"847.0,1913.0 986.0,1913.0 983.4,1459.7 1188.1,1283.4 1613.0,1285.3 1613.0,0.0 1239.9,0.0 1217.7,81.5 1142.8,99.6 12.8,112.5 12.0,1140.8 486.1,1117.2 497.9,1913.0 847.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[184.0,1125.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.8497195,43.0034637]}},{"type":"Feature","properties":{"resourceCoords":[482.0,106.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.849158,43.005484]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ballston Spa, New-York | 1897 | sanborn05757_003 p6 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T19:25:46Z","modified":"2026-09-23T19:25:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"259.8,1689.7 321.9,1696.3 322.5,1913.0 773.5,1913.0 752.1,1692.7 1048.6,1690.0 1026.0,952.0 1533.7,943.4 1613.0,479.1 1613.0,0.0 0.0,-0.0 0.0,106.2 0.0,504.8 210.1,506.9 228.6,1640.5 259.8,1689.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1026.0,952.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.8493653,43.0070963]}},{"type":"Feature","properties":{"resourceCoords":[1026.0,93.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.85171,43.006956]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ballston Spa, New-York | 1897 | sanborn05757_003 p7","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"}],"created":"2026-09-23T19:25:46Z","modified":"2026-09-23T19:25:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"780.1,1913.0 808.0,1596.0 17.3,1543.6 150.5,0.0 1613.0,0.0 1613.0,1913.0 780.1,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[808.0,1596.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.847356,43.007262]}},{"type":"Feature","properties":{"resourceCoords":[808.0,927.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.8476591,43.0084908]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0008__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ballston Spa, New-York | 1897 | sanborn05757_003 p8 [2]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T19:25:46Z","modified":"2026-09-23T19:25:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0008__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"936.8,1688.9 1432.4,1669.7 1225.8,705.6 1613.0,585.8 1613.0,0.0 112.0,0.0 196.4,420.9 -0.0,456.2 0.0,945.9 565.8,946.0 563.7,1767.6 936.8,1688.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0008__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[989.0,1690.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.8506532,43.0081771]}},{"type":"Feature","properties":{"resourceCoords":[1128.0,374.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.8498623,43.0106242]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0009__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ballston Spa, New-York | 1897 | sanborn05757_003 p9 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3257.2"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T19:25:46Z","modified":"2026-09-23T19:25:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0009__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"400.6,1483.2 -0.0,1758.6 -0.0,1913.0 467.9,1913.0 616.6,1718.0 811.6,1868.7 814.3,0.0 -0.0,0.0 -0.0,744.9 260.1,566.1 422.5,832.1 400.6,1483.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0009__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[417.1,935.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.858894,43.011384]}},{"type":"Feature","properties":{"resourceCoords":[417.1,1536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.857927,43.010572]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0009__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ballston Spa, New-York | 1897 | sanborn05757_003 p9 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"3246.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3206.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T19:25:46Z","modified":"2026-09-23T19:25:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0009__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1140.8,1714.1 1138.2,1913.0 1613.0,1910.0 1613.0,0.0 1464.6,0.0 1157.0,234.6 1158.6,0.0 814.3,0.0 811.9,1650.3 1140.8,1714.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804bm:g3804bm_g057571897:05757_1897-0009__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1156.3,849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.855055,43.010662]}},{"type":"Feature","properties":{"resourceCoords":[1156.3,327.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.856414,43.010597]}}]}}]}