{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08976_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Basic City, Virginia | 1913 | mapsnap generated fit (2026-09-24)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-24"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"19"},{"label":"placed","value":"9"},{"label":"unplaced","value":"10"},{"label":"fit sources","value":"georef 5, georef-snap 2, snap:0 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"5 sheet(s) cut into 17 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 38.06162,-78.88055 +/-187m); p4__1 (tier 1, 38.06567,-78.87698 +/-237m); p4__2 (tier 2, 38.06751,-78.87709 +/-100m); p4__3 (tier 2, 38.06751,-78.87709 +/-100m); p5__1 (tier 1, 38.08245,-78.86803 +/-111m); p5__4 (tier 1, 38.07955,-78.86877 +/-110m); p6__2 (tier 2, 38.07289,-78.88146 +/-100m); p6__3 (tier 2, 38.07289,-78.88146 +/-100m); p6__5 (tier 1, 38.07012,-78.87074 +/-100m); p7__1 (tier 1, 38.07489,-78.88443 +/-108m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Basic City, Virginia | 1913 | sanborn08976_001 p1 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3891.6"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3760.4"}],"created":"2026-09-24T05:29:00Z","modified":"2026-09-24T05:29:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1913.0 1613.0,1913.0 1613.0,972.9 0.0,977.3 0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,972.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.88338466054691,38.07286906241634]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,972.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.88231209902406,38.075791211652685]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.88014451748309,38.07529910450501]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.88121707900594,38.07237695526866]}},{"type":"Feature","properties":{"resourceCoords":[231.0,1562.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.881872,38.072979]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Basic City, Virginia | 1913 | sanborn08976_001 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T05:29:00Z","modified":"2026-09-24T05:29:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1351.6,1876.5 396.1,1903.7 392.4,1752.5 -0.0,1750.8 -0.0,0.0 1613.0,0.0 1613.0,1913.0 1581.8,1913.0 1582.5,1757.7 1350.6,1756.7 1351.6,1876.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.874365195784,38.073945325400345]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87099685354936,38.072591075463265]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87302275627489,38.06942400554341]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87639109850953,38.07077825548049]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Basic City, Virginia | 1913 | sanborn08976_001 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-24T05:29:00Z","modified":"2026-09-24T05:29:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 -0.0,1913.0 -0.0,0.0 432.3,0.0 436.7,150.0 1384.4,118.8 1382.9,0.0 1613.0,0.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.8763096333593,38.071083587055895]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87292189244293,38.06970672376566]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87498154275661,38.06652128894306]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87836928367298,38.06789815223329]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0005__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Basic City, Virginia | 1913 | sanborn08976_001 p5 [2]","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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-24T05:29:00Z","modified":"2026-09-24T05:29:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0005__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1311.5,242.3 1304.0,0.0 953.5,0.0 784.7,350.6 539.6,350.6 539.7,807.3 434.5,980.6 0.0,980.7 -0.0,1646.6 547.0,1546.7 613.9,1913.0 894.0,1913.0 895.6,1081.4 1613.0,1077.1 1613.0,233.0 1311.5,242.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0005__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1433.0,1059.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.87769,38.075379]}},{"type":"Feature","properties":{"resourceCoords":[1433.0,110.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.876663,38.077002]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0005__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Basic City, Virginia | 1913 | sanborn08976_001 p5 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"2158.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1655.6"},{"label":"split_canvas_h","value":"1402.4"}],"created":"2026-09-24T05:29:00Z","modified":"2026-09-24T05:29:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0005__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"539.6,-0.0 539.6,350.6 784.7,350.6 953.5,0.0 539.6,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0005__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[539.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87605293475352,38.074927767831355]}},{"type":"Feature","properties":{"resourceCoords":[953.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87516613498988,38.07457292108693]}},{"type":"Feature","properties":{"resourceCoords":[953.5,350.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87554774313942,38.07398303684798]}},{"type":"Feature","properties":{"resourceCoords":[539.6,350.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87643454290306,38.0743378835924]}},{"type":"Feature","properties":{"resourceCoords":[822.9,90.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.875545,38.074532]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Basic City, Virginia | 1913 | sanborn08976_001 p6 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3142.4"},{"label":"split_canvas_h","value":"3200.8"}],"created":"2026-09-24T05:29:00Z","modified":"2026-09-24T05:29:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 -0.0,800.2 518.0,799.6 784.4,799.3 784.6,676.1 785.6,0.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0006__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":[-78.87626912736317,38.07824976638322]}},{"type":"Feature","properties":{"resourceCoords":[785.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87455697174157,38.07763062698993]}},{"type":"Feature","properties":{"resourceCoords":[785.6,800.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87535823213176,38.07626008331059]}},{"type":"Feature","properties":{"resourceCoords":[0.0,800.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.87707038775336,38.07687922270389]}},{"type":"Feature","properties":{"resourceCoords":[617.7,680.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.875604,38.076598]}},{"type":"Feature","properties":{"resourceCoords":[617.7,680.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.875604,38.076598]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0006__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Basic City, Virginia | 1913 | sanborn08976_001 p6 [4]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3196.8"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4455.2"}],"created":"2026-09-24T05:29:00Z","modified":"2026-09-24T05:29:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0006__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1767.5 1613.0,1168.0 812.0,1169.4 811.9,799.2 784.4,799.3 518.0,799.6 518.3,1484.8 0.0,1486.2 -0.0,1913.0 265.8,1913.0 265.9,1757.2 1613.0,1767.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0006__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[190.0,1707.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.874476,38.074097]}},{"type":"Feature","properties":{"resourceCoords":[1554.0,1707.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.871498,38.072922]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0007__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Basic City, Virginia | 1913 | sanborn08976_001 p7 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"2026-09-24T05:29:00Z","modified":"2026-09-24T05:29:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0007__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 1613.0,0.0 810.2,0.0 809.7,644.7 362.8,652.9 363.8,1010.0 0.0,1009.6 -0.0,1913.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0007__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":[-78.88833019877026,38.0743497896221]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.88472391674668,38.07370670972341]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.88568595272142,38.070315969529304]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.889292234745,38.07095904942799]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0007__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Basic City, Virginia | 1913 | sanborn08976_001 p7 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"1444.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1796.8"},{"label":"split_canvas_h","value":"2611.6"}],"created":"2026-09-24T05:29:00Z","modified":"2026-09-24T05:29:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0007__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"809.9,442.1 810.2,0.0 361.0,-0.0 362.8,652.9 613.4,648.3 620.0,452.9 809.9,442.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884bm:g3884bm_g089761913:08976_1913-0007__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[361.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.88841264112004,38.07376596307563]}},{"type":"Feature","properties":{"resourceCoords":[810.2,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.88743389395317,38.07356138618316]}},{"type":"Feature","properties":{"resourceCoords":[810.2,652.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.88780835342156,38.07243542449398]}},{"type":"Feature","properties":{"resourceCoords":[361.0,652.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.88878710058843,38.07264000138645]}}]}}]}