{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn09421_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Martinsburg, West-Virginia | 1885 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"7"},{"label":"placed","value":"5"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 4, georef-snap 1"},{"label":"key map","value":"none"},{"label":"unplaced pages","value":"p1 (tier 1, 39.45888,-77.95706 +/-259m); p3 (tier 1, 39.46223,-77.96212 +/-253m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1885 | sanborn09421_001 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:20:44Z","modified":"2026-10-19T16:20:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1556.0,1060.0 1552.5,1768.0 1612.0,1767.5 1612.0,1806.2 1600.8,1806.0 1543.8,1880.3 1117.9,1894.6 78.3,1864.1 42.8,494.2 113.4,107.8 303.2,113.8 575.0,24.4 1390.9,94.9 1577.2,86.7 1612.0,76.7 1612.0,363.5 1558.2,364.1 1556.0,1060.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1022.0,1060.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9688973,39.4571746]}},{"type":"Feature","properties":{"resourceCoords":[1556.0,1060.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9676588,39.4569394]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1885 | sanborn09421_001 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:20:44Z","modified":"2026-10-19T16:20:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"35.4,1497.2 35.2,691.9 36.4,471.9 42.9,285.2 42.2,71.7 373.2,11.2 1554.9,65.1 1611.8,1393.5 1518.0,1785.6 1562.3,1812.6 1537.3,1839.7 1186.0,1822.4 1183.8,1806.8 1080.8,1810.4 568.0,1814.2 33.8,1808.2 35.4,1497.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[559.0,1110.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9619448957463,39.458515456381065]}},{"type":"Feature","properties":{"resourceCoords":[559.0,1803.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.96233275959027,39.45727559235014]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1885 | sanborn09421_001 p5","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:20:44Z","modified":"2026-10-19T16:20:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"176.5,1795.8 455.1,1796.3 974.4,1793.4 1502.0,1794.0 1502.7,1487.6 1500.2,694.2 1500.6,477.5 1506.5,293.5 1505.2,83.1 1454.3,92.5 1311.0,23.5 575.4,25.1 138.7,154.2 128.8,387.1 47.6,511.1 94.1,670.7 48.1,756.3 54.6,1208.2 124.2,1310.1 126.8,1473.0 1.0,1509.0 1.0,1797.7 176.5,1795.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1502.0,1104.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9631559,39.4587454]}},{"type":"Feature","properties":{"resourceCoords":[1502.0,1794.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9635527,39.4574933]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1885 | sanborn09421_001 p6","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:20:44Z","modified":"2026-10-19T16:20:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"110.2,1444.3 108.3,1162.1 100.8,636.0 96.8,101.5 1185.8,85.5 1612.0,82.7 1612.0,94.1 1586.7,96.3 1569.5,266.8 1556.8,1631.6 1518.1,1632.8 1519.0,1692.3 811.0,1694.0 115.0,1697.0 110.2,1444.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[801.0,627.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9651829,39.4564732]}},{"type":"Feature","properties":{"resourceCoords":[115.0,1697.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9672567,39.4581846]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1885 | sanborn09421_001 p7","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:20:44Z","modified":"2026-10-19T16:20:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"620.0,84.0 1131.7,82.8 1234.5,79.6 1236.5,95.2 1587.0,114.2 1558.1,145.2 1600.5,706.2 1543.8,1801.6 1195.1,1884.0 771.3,1871.4 660.3,1815.0 576.2,1872.5 90.1,1882.2 69.5,1590.8 80.8,1589.9 85.0,1163.9 87.0,75.3 620.0,84.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211885:09421_1885-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[620.0,84.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9623182,39.4572517]}},{"type":"Feature","properties":{"resourceCoords":[86.0,776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9639401,39.4562359]}}]}}]}