{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03609_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Hagerstown, Maryland | 1910 | 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":"66"},{"label":"placed","value":"36"},{"label":"unplaced","value":"30"},{"label":"fit sources","value":"georef-snap 19, georef 16, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"13 sheet(s) cut into 39 panels"},{"label":"unplaced pages","value":"p18__2 (tier 1, 39.63916,-77.71610 +/-136m); p24__2 (tier 1, 39.63563,-77.72202 +/-100m); p25__2 (tier 1, 39.62515,-77.72663 +/-236m); p26 (tier 3, 39.63890,-77.73375 +/-437m); p27__1 (tier 4, 39.64241,-77.72183 +/-1629m); p27__2 (tier 4, 39.64241,-77.72183 +/-1629m); p27__3 (tier 4, 39.64241,-77.72183 +/-1629m); p28__3 (tier 1, 39.64492,-77.73471 +/-100m); p29__3 (tier 1, 39.63781,-77.71475 +/-107m); p33__1 (tier 1, 39.64160,-77.72445 +/-211m); p33__3 (tier 1, 39.64027,-77.72542 +/-207m); p34__1 (tier 1, 39.65252,-77.71525 +/-100m); p34__3 (tier 1, 39.65367,-77.71574 +/-100m); p34__4 (tier 1, 39.65329,-77.71654 +/-139m); p34__5 (tier 1, 39.65263,-77.71068 +/-112m); p35__1 (tier 4, 39.64241,-77.72183 +/-1629m); p35__2 (tier 4, 39.64241,-77.72183 +/-1629m); p36__1 (tier 4, 39.64241,-77.72183 +/-1629m); p36__2 (tier 4, 39.64241,-77.72183 +/-1629m); p37__1 (tier 4, 39.64241,-77.72183 +/-1629m); p37__2 (tier 4, 39.64241,-77.72183 +/-1629m); p37__3 (tier 4, 39.64241,-77.72183 +/-1629m); p38 (tier 4, 39.64241,-77.72183 +/-1629m); p39 (tier 4, 39.64241,-77.72183 +/-1629m); p40__1 (tier 1, 39.64631,-77.72644 +/-112m); p40__2 (tier 1, 39.64273,-77.72466 +/-116m); p40__3 (tier 1, 39.64438,-77.72796 +/-100m); p40__4 (tier 1, 39.64516,-77.72400 +/-187m); p40__5 (tier 1, 39.64189,-77.72480 +/-108m); p41 (tier 4, 39.64241,-77.72183 +/-1629m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1.0,1661.5 1.0,1791.6 44.0,1789.5 389.2,1893.3 750.1,1822.0 1387.5,1882.1 1399.9,1912.0 1425.2,1912.0 1441.1,1912.0 1517.1,1620.0 1530.7,1627.8 1541.2,1532.2 1579.8,857.4 1556.7,459.4 1548.2,49.9 1013.4,61.4 770.0,63.3 2.0,86.5 13.9,497.5 29.6,905.3 32.1,1146.3 37.5,1147.8 1.0,1661.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[48.0,62.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72737499152608,39.64724208506321]}},{"type":"Feature","properties":{"resourceCoords":[1549.0,878.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72541984817532,39.644445287672056]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1433.4,1774.9 1258.9,1883.5 894.5,1878.0 894.7,1871.5 470.6,1869.1 470.6,1871.4 213.1,1875.9 213.1,1871.0 212.5,1774.0 202.5,1361.1 65.2,1411.8 49.9,1287.9 88.2,1098.5 173.4,706.5 122.1,693.5 46.5,278.0 71.4,262.5 97.1,152.1 47.0,71.7 6.3,56.9 240.7,57.0 282.3,57.0 935.5,58.4 1376.3,61.5 1572.9,60.6 1575.6,473.5 1582.3,883.2 1579.5,1125.3 1584.8,1126.8 1535.4,1655.8 1532.8,1772.4 1433.4,1774.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[185.0,722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.73117373594539,39.64756911664204]}},{"type":"Feature","properties":{"resourceCoords":[1554.0,886.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72858766069854,39.64597191504242]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1420.2,1842.3 70.7,1849.2 64.8,659.6 65.8,261.7 64.0,75.7 64.0,68.1 848.3,108.8 848.3,135.8 1379.3,131.2 1380.9,141.6 1609.4,148.9 1434.0,493.2 1438.2,544.8 1495.2,1041.2 1532.5,1325.5 1610.1,1852.0 1605.8,1855.0 1420.2,1842.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[842.0,1040.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.71425884100381,39.64271507247484]}},{"type":"Feature","properties":{"resourceCoords":[1485.0,1040.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.71293262450428,39.642086990390716]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p13","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"191.4,914.8 188.1,162.4 584.3,165.6 1353.8,153.3 1352.5,550.7 1357.8,1738.8 676.0,1742.0 197.0,1741.0 191.4,914.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1354.0,940.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7158703,39.6434578]}},{"type":"Feature","properties":{"resourceCoords":[197.0,1741.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7192767,39.6433142]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p14","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1035.5,1756.4 279.1,1765.0 263.4,936.5 244.5,177.0 732.3,176.4 1005.2,165.4 1408.0,165.0 1425.4,919.8 1446.4,1748.6 1035.5,1756.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[264.0,962.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.720658,39.6457327]}},{"type":"Feature","properties":{"resourceCoords":[1408.0,165.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7172919,39.6458339]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p15","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1258.8,1754.5 1101.8,1758.8 187.0,1763.0 169.9,983.3 165.1,983.4 160.0,259.1 663.5,189.4 663.4,182.3 1448.0,172.0 1463.8,928.2 1476.2,1753.2 1258.8,1754.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[187.0,1763.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7243273,39.6457348]}},{"type":"Feature","properties":{"resourceCoords":[1448.0,172.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.719675,39.6469822]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1058.7,1858.6 814.4,1854.1 42.8,1857.0 44.2,1645.8 41.1,1450.4 39.1,1055.6 34.5,854.2 36.4,709.6 219.2,795.8 115.1,46.9 64.8,27.5 1254.5,96.3 1323.5,34.2 1588.1,352.4 1583.9,1074.2 1588.8,1074.2 1595.8,1861.2 1058.7,1858.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1561.0,1049.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72337350650248,39.64704861539251]}},{"type":"Feature","properties":{"resourceCoords":[58.0,1049.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7264495248729,39.64850916336124]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"93.9,1836.0 98.1,1836.0 741.2,1846.6 1175.1,1855.8 1368.7,1857.7 1372.2,1649.7 1371.0,1457.4 1372.9,1068.6 1370.3,870.3 1373.6,727.9 1552.8,814.6 1457.6,76.2 1408.2,56.6 1155.2,39.5 845.5,150.9 712.5,97.0 504.7,155.3 289.1,34.0 8.7,69.0 1.0,66.4 1.0,140.1 141.8,168.8 131.0,626.2 111.4,1258.7 104.0,1639.7 93.9,1836.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[743.0,1453.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72829842323654,39.64850977626545]}},{"type":"Feature","properties":{"resourceCoords":[886.0,1061.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72750506161722,39.6490021144189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0018__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p18 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.92"},{"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":"3709.2"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0018__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"590.5,77.7 357.2,32.5 80.2,115.8 118.6,568.2 69.1,1119.3 138.6,1760.6 290.5,1880.2 570.0,1878.8 887.4,1840.5 924.0,1836.0 920.8,1762.3 907.8,1638.2 863.6,1256.0 797.5,620.5 746.4,161.3 600.5,151.5 590.5,77.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0018__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[268.1,1026.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7301477,39.6504642]}},{"type":"Feature","properties":{"resourceCoords":[268.1,133.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7287945,39.6517601]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0018__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p18 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.35"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3528.4"},{"label":"split_canvas_y","value":"3435.6"},{"label":"split_canvas_w","value":"2923.6"},{"label":"split_canvas_h","value":"4216.4"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0018__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"946.1,898.9 946.1,1872.0 1236.3,1878.2 1237.3,1909.0 1559.0,1878.3 1528.0,1481.8 1583.2,1297.7 1612.0,1281.8 1612.0,1201.3 1612.0,1065.7 1538.1,908.6 1441.0,906.0 1424.3,868.1 1416.0,868.0 1262.8,865.4 1262.7,901.0 1099.5,896.6 946.1,898.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0018__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[946.1,898.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7163227,39.6383291]}},{"type":"Feature","properties":{"resourceCoords":[946.1,1872.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7175049,39.6368443]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p19","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1373.5,1526.5 1375.3,1711.6 608.7,1724.8 214.0,1722.0 214.0,930.0 216.9,216.9 217.1,156.8 1381.6,156.9 1380.0,940.5 1371.4,1323.8 1373.5,1526.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[214.0,930.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7162813,39.6470974]}},{"type":"Feature","properties":{"resourceCoords":[214.0,1722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7172919,39.6458339]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p2","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"868.3,1829.0 866.8,1912.0 352.8,1912.0 87.6,1679.6 87.9,1341.9 79.0,447.8 78.3,52.6 866.0,47.0 1334.3,56.3 1335.7,983.3 1612.0,988.8 1612.0,1018.2 1545.2,1024.6 1592.6,1526.5 1519.7,1832.8 1190.8,1832.7 1223.8,1804.0 1164.5,1789.9 984.0,1861.0 868.3,1829.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[866.0,1003.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7185061,39.6372752]}},{"type":"Feature","properties":{"resourceCoords":[866.0,47.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.717284,39.638805]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0020","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1001.0,1822.9 726.5,1830.8 236.2,1826.1 223.7,411.2 219.2,129.6 507.7,201.4 762.6,128.0 828.3,26.8 1080.2,37.9 1080.8,68.4 1398.8,261.1 1398.9,303.1 1400.6,1025.0 1405.9,1826.8 1001.0,1822.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1393.0,1014.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.71628279971574,39.647122271869385]}},{"type":"Feature","properties":{"resourceCoords":[232.0,1014.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.71864926486317,39.64826088866898]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"292.7,1883.2 37.9,1569.7 89.3,1524.5 29.1,1037.8 39.4,267.9 147.8,61.6 637.0,33.1 1022.6,149.9 1521.5,40.9 1575.6,163.4 1575.3,438.3 1563.8,1819.2 790.5,1810.6 790.5,1817.7 292.9,1874.3 292.7,1883.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1140.0,978.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7195019806236,39.648763264175344]}},{"type":"Feature","properties":{"resourceCoords":[1556.0,978.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.718623977257,39.64835683844962]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p22","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"313.9,1819.0 1491.9,1836.6 1507.8,1740.1 1510.0,1015.8 1517.0,245.2 1512.9,197.2 1054.6,217.6 743.5,238.2 670.2,221.2 767.9,26.8 562.6,37.2 561.0,11.6 385.7,42.0 333.0,124.3 51.6,207.1 30.9,1609.9 1.0,1608.0 1.0,1639.1 313.6,1837.8 313.9,1819.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[336.0,891.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.71410054318484,39.64978333763342]}},{"type":"Feature","properties":{"resourceCoords":[683.0,234.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.71257495029408,39.65049986508021]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p23","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.70"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0023","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"875.7,1823.3 752.2,1820.5 751.4,1815.3 487.3,1819.9 487.1,1806.4 96.8,1789.6 95.0,1692.0 97.8,1500.4 95.4,1108.7 102.1,1060.8 95.0,703.0 89.7,322.2 87.2,298.6 67.2,105.8 173.9,95.9 203.3,138.7 433.3,92.2 1209.5,191.8 1300.9,134.4 1359.7,140.1 1484.0,87.6 1561.8,123.7 1559.2,1833.3 1584.7,1912.0 1576.3,1912.0 1502.0,1703.6 1491.4,1707.0 1187.1,1836.0 1185.0,1830.5 875.7,1823.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[95.0,703.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7118282,39.6484723]}},{"type":"Feature","properties":{"resourceCoords":[95.0,1692.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7143857,39.6453321]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0024__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p24 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.83"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0024__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0024","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"287.6,496.8 342.3,445.1 472.1,613.0 539.9,827.8 498.1,986.7 121.3,1114.2 50.4,1199.9 47.4,1301.3 108.5,1346.1 60.0,1534.1 136.0,1669.1 103.1,1789.2 325.4,1866.1 697.0,1717.0 883.4,1749.9 1007.2,1855.1 1501.0,1862.0 1581.0,1595.5 1565.8,1476.4 1582.6,1476.6 1571.0,1075.4 1568.2,674.7 1611.2,675.4 1299.5,405.9 1297.6,74.9 1272.0,67.3 829.0,77.8 854.4,130.7 465.9,103.6 416.1,1.0 333.0,1.0 287.6,496.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0024__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[450.0,1042.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7236208738051,39.6367871460245]}},{"type":"Feature","properties":{"resourceCoords":[1286.0,73.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72057805510276,39.637513750551456]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0025__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p25 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.59"},{"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":"2028.0"},{"label":"split_canvas_h","value":"2796.0"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0025__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"344.7,650.0 355.3,632.6 434.7,632.1 481.2,584.7 481.3,69.2 269.0,26.6 211.6,63.9 103.6,69.5 27.2,24.6 31.5,679.1 339.2,676.9 355.4,662.1 344.7,650.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0025__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":[-77.73313081409106,39.629521698411295]}},{"type":"Feature","properties":{"resourceCoords":[507.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.73178835754067,39.631114419607286]}},{"type":"Feature","properties":{"resourceCoords":[507.0,699.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.728938299469,39.629688402545426]}},{"type":"Feature","properties":{"resourceCoords":[0.0,699.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.73028075601938,39.628095681349436]}},{"type":"Feature","properties":{"resourceCoords":[252.0,84.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7321231,39.630143]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0025__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p25 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2782.8"},{"label":"split_canvas_w","value":"2732.0"},{"label":"split_canvas_h","value":"4869.2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0025__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"394.6,1836.7 432.7,1882.0 611.5,1846.1 643.5,1670.2 664.4,720.9 358.8,738.2 214.0,804.4 115.7,719.7 35.3,782.3 84.5,969.8 33.6,1040.3 28.4,1350.2 73.2,1399.3 35.0,1869.0 367.5,1869.6 394.6,1836.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0025__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,695.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7259914965101,39.63060770501215]}},{"type":"Feature","properties":{"resourceCoords":[683.0,695.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72455066233245,39.62997214934823]}},{"type":"Feature","properties":{"resourceCoords":[683.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72602170378538,39.62799246543823]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72746253796304,39.62862802110216]}},{"type":"Feature","properties":{"resourceCoords":[203.0,1204.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.726178,39.6295915]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0028__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p28 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.62"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0028__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0028","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"332.7,70.8 1.0,186.2 1.0,1525.2 26.1,1509.6 83.5,1560.2 360.0,1491.3 680.5,1852.7 985.7,1843.7 965.0,1519.8 1201.2,1372.4 1406.2,1451.8 1487.8,1375.0 1594.9,522.4 1478.8,59.4 1490.0,52.4 1123.5,47.2 1123.7,40.7 697.3,38.7 697.3,41.0 438.3,45.8 438.3,40.8 374.3,45.1 332.7,70.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0028__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[697.0,551.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7326971,39.6446867]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,551.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7318633,39.6442862]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0028__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p28 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.62"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4267.6"},{"label":"split_canvas_y","value":"5914.0"},{"label":"split_canvas_w","value":"2184.4"},{"label":"split_canvas_h","value":"1738.0"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0028__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0028","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1086.7,1894.6 1571.3,1910.6 1592.0,1866.2 1553.7,1763.7 1551.3,1514.2 1463.2,1483.0 1163.2,1493.2 1086.8,1594.0 1099.5,1644.2 1132.7,1645.1 1173.7,1701.6 1170.1,1780.8 1086.7,1894.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0028__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1066.9,1478.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72619530076159,39.65340214933593]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1478.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7244126589245,39.651881723378104]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72598198047692,39.65078947529184]}},{"type":"Feature","properties":{"resourceCoords":[1066.9,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.727764622314,39.652309901249666]}},{"type":"Feature","properties":{"resourceCoords":[1168.7,1820.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7270967,39.6522599]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0029__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p29 [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":"3700.4"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0029__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0029","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"125.5,1283.0 104.4,1602.2 106.1,1656.3 174.5,1805.1 278.1,1864.4 693.6,1896.0 841.1,1846.6 843.9,1435.0 673.2,1260.0 617.6,959.1 870.7,821.9 923.5,616.4 899.1,113.1 601.9,87.4 520.0,25.1 197.8,32.2 193.5,1.0 133.2,1.0 97.7,87.0 90.0,270.6 18.8,430.3 36.5,437.9 1.0,601.0 1.0,895.6 84.7,935.2 88.8,1102.7 4.7,1293.7 125.5,1283.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0029__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[102.0,1222.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.71521417868924,39.63722956060825]}},{"type":"Feature","properties":{"resourceCoords":[90.0,38.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.71485867072094,39.63940763300391]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0029__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p29 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.84"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3700.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2751.6"},{"label":"split_canvas_h","value":"4570.0"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0029__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0029","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"944.2,1015.5 954.8,1141.5 969.1,1110.3 1187.3,1124.3 1531.7,1017.0 1488.8,720.2 1585.2,564.6 1588.5,73.3 1598.3,69.5 1478.5,36.5 1477.0,122.4 945.9,123.7 997.5,168.9 952.1,168.0 952.0,591.6 961.9,1015.8 944.2,1015.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0029__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1476.0,1015.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7207709,39.634442]}},{"type":"Feature","properties":{"resourceCoords":[1476.0,174.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7197322,39.635741]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p3","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"360.6,1287.6 212.6,965.4 191.3,852.2 195.1,240.4 268.7,257.4 589.6,264.8 1350.6,277.3 1348.0,673.0 1349.3,1568.3 1323.2,1560.1 870.5,1564.0 895.7,1618.4 499.3,1584.7 360.6,1287.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1348.0,673.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7194316,39.6389384]}},{"type":"Feature","properties":{"resourceCoords":[1348.0,1220.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7201203,39.6380597]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p30","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0030","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"665.6,52.3 657.7,67.7 217.3,59.7 216.3,81.7 242.4,739.1 230.8,739.2 1.0,1307.7 1.0,1337.1 252.8,1608.9 302.1,1622.6 783.0,1739.2 1060.1,1801.7 1576.0,1909.5 1513.7,1666.9 1527.4,684.7 1445.9,679.2 1422.9,384.2 1431.0,207.2 1520.9,181.7 1525.0,93.2 1219.9,78.7 1021.0,73.5 1020.9,69.2 665.6,52.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0030/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1024.0,47.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.70897378422933,39.641000204024124]}},{"type":"Feature","properties":{"resourceCoords":[256.0,1616.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7123628327488,39.64300202241031]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p31","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0031","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"388.2,95.7 389.1,102.8 772.5,107.8 773.3,122.4 1030.4,80.5 1030.4,84.9 1284.5,132.7 1284.2,109.8 1539.9,168.7 1515.7,182.2 1576.2,514.6 1561.6,1834.9 1399.8,1861.1 887.1,1912.0 876.6,1912.0 551.7,1912.0 210.5,1467.0 129.7,1499.7 130.7,1322.8 56.6,1284.0 63.4,1061.6 180.8,855.5 77.2,507.4 53.4,152.6 23.7,117.6 388.2,95.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0031/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1012.0,762.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72681369818287,39.63814506456994]}},{"type":"Feature","properties":{"resourceCoords":[1127.0,1871.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7279882993114,39.636250270759255]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0032__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p32 [1]","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"21"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0032__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0032","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1606.1,93.8 1525.2,112.7 1497.9,59.7 1440.7,69.3 1379.8,31.6 990.3,18.9 896.6,63.1 678.5,99.5 674.1,159.9 600.7,195.7 292.2,227.2 249.5,203.8 257.5,317.1 88.8,390.1 78.3,567.2 60.9,619.9 35.6,670.2 24.8,1289.7 34.4,1414.0 38.0,1414.0 38.8,1471.7 48.4,1596.3 94.0,1775.2 76.0,1809.1 472.8,1678.9 862.8,1598.6 930.8,1508.3 941.1,1505.9 940.4,1404.5 939.8,1305.4 979.8,890.6 981.8,869.9 1062.7,869.2 1327.6,867.2 1367.0,866.9 1376.7,866.8 1400.2,861.4 1431.8,866.4 1446.0,823.9 1507.0,628.1 1434.3,630.0 1446.9,569.3 1495.1,486.3 1597.6,315.5 1575.5,301.2 1606.1,93.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0032__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1005.0,329.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7339859,39.6480603]}},{"type":"Feature","properties":{"resourceCoords":[38.0,1414.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7397436,39.6449452]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0032__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p32 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3759.2"},{"label":"split_canvas_y","value":"3460.0"},{"label":"split_canvas_w","value":"2692.8"},{"label":"split_canvas_h","value":"4192.0"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0032__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0032","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1059.9,869.2 1011.7,869.6 1022.6,887.1 981.8,932.0 952.1,1326.2 960.8,1877.0 1554.3,1889.0 1585.8,1059.9 1574.0,915.4 1537.5,883.0 1538.4,875.0 1452.7,880.5 1183.0,881.2 1059.9,869.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0032__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1314.3,1416.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7290793676157,39.634484871909294]}},{"type":"Feature","properties":{"resourceCoords":[1314.3,895.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72801744763939,39.636168965089944]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0033__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p33 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.35"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4198.0"},{"label":"split_canvas_w","value":"3295.6"},{"label":"split_canvas_h","value":"3454.0"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0033__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0033","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"761.9,1823.3 780.6,1206.7 617.6,1066.5 429.6,1148.0 328.3,1072.5 66.6,1112.7 35.4,1072.2 7.8,1909.7 808.1,1905.0 761.9,1823.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0033__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1049.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72424685597355,39.633080127955026]}},{"type":"Feature","properties":{"resourceCoords":[823.9,1049.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72252134750072,39.63232251541949]}},{"type":"Feature","properties":{"resourceCoords":[823.9,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72354558886683,39.63091926559061]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72527109733967,39.63167687812615]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0034__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p34 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.91"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1768.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4683.6"},{"label":"split_canvas_h","value":"4398.4"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0034__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0034","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"445.1,738.0 445.1,743.7 444.9,763.1 646.0,767.7 536.7,950.5 607.1,972.3 912.3,974.5 1361.3,987.6 1358.7,603.8 1571.1,604.7 1538.0,544.9 1566.7,267.4 1499.8,69.8 1244.6,21.9 865.1,60.0 585.9,133.4 562.8,156.5 571.6,382.1 485.5,480.9 530.1,729.6 445.1,738.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0034__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[646.1,767.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7121446,39.6507491]}},{"type":"Feature","properties":{"resourceCoords":[902.0,340.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7111132,39.651255]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"370.6,1812.1 371.0,1835.0 116.7,1788.6 116.5,1692.8 115.3,1454.1 123.0,1037.5 129.6,96.4 517.0,99.2 725.5,103.5 1294.0,100.8 1297.0,710.4 1319.5,822.9 1470.5,1142.3 1561.2,1331.2 1477.2,1330.8 1428.0,1844.0 1408.3,1864.9 1031.2,1786.5 746.4,1802.7 626.6,1869.7 370.6,1812.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[892.0,86.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72210895863533,39.641173117480896]}},{"type":"Feature","properties":{"resourceCoords":[128.0,1409.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72539972851615,39.63981147896097]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1551.7,1766.8 1297.1,1816.0 1295.8,1801.5 914.3,1807.7 913.2,1800.7 551.1,1833.1 427.1,1695.4 266.9,1697.8 137.6,1773.7 129.8,1565.9 47.2,1517.6 31.2,1127.8 109.3,830.0 60.5,768.2 93.4,440.2 61.1,362.3 101.6,362.4 176.5,75.5 189.9,83.1 285.2,100.8 384.9,110.0 499.8,109.0 1524.1,87.0 1540.1,1023.6 1542.4,1438.3 1549.3,1675.8 1551.7,1766.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[447.0,1436.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72773476900642,39.640887994463576]}},{"type":"Feature","properties":{"resourceCoords":[188.0,85.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72645387694467,39.64329617754366]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"833.0,1766.5 34.8,1774.5 24.5,495.6 17.7,128.1 1375.0,117.0 1561.7,129.2 1547.4,139.1 1549.2,805.5 1597.3,883.0 1542.7,907.4 1545.3,1001.5 1612.0,1169.6 1612.0,1775.2 1455.5,1771.7 1307.6,1774.5 833.0,1766.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1295.0,1770.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.71634278327821,39.63834851936686]}},{"type":"Feature","properties":{"resourceCoords":[50.0,946.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.71784675977266,39.64086263773447]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"602.4,1762.6 279.8,1756.6 205.8,1739.8 213.6,1101.2 202.4,600.6 200.7,134.9 679.7,137.5 1361.5,136.5 1365.7,501.6 1367.3,1771.7 602.4,1762.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[616.0,946.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.71944079394532,39.64161775248429]}},{"type":"Feature","properties":{"resourceCoords":[616.0,1771.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72048213388327,39.64030281840356]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"804.9,1759.4 595.0,1754.4 205.0,1750.6 209.5,1359.5 208.9,555.5 204.8,151.6 957.3,156.7 1366.0,156.2 1369.6,621.0 1382.6,1120.6 1377.2,1758.1 804.9,1759.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[968.0,1762.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72214359307198,39.64114597423166]}},{"type":"Feature","properties":{"resourceCoords":[215.0,962.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72268350288086,39.643158376767026]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1910 | sanborn03609_005 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:25:58Z","modified":"2026-10-18T22:25:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"390.1,1745.7 272.2,1743.2 170.2,1730.7 73.1,1709.6 86.7,1613.7 146.6,934.9 135.7,533.1 139.9,120.1 1066.8,132.0 1225.9,130.3 1446.2,132.9 1449.0,542.5 1446.8,1358.1 1441.0,1754.7 390.1,1745.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091910:03609_1910-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1439.0,950.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72270759942963,39.64318030630256]}},{"type":"Feature","properties":{"resourceCoords":[1439.0,1753.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.72370961714415,39.64191639938886]}}]}}]}