{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03609_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Hagerstown, Maryland | 1918 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"60"},{"label":"placed","value":"38"},{"label":"unplaced","value":"22"},{"label":"fit sources","value":"georef 19, georef-snap 18, georef-street 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"12 sheet(s) cut into 32 panels"},{"label":"unplaced pages","value":"p1 (tier 1, 39.64384,-77.73388 +/-258m); p10__1 (tier 1, 39.63847,-77.72142 +/-100m); p22__2 (tier 2, 39.65026,-77.72551 +/-100m); p23__2 (tier 1, 39.63109,-77.71013 +/-100m); p29__1 (tier 3, 39.63888,-77.73060 +/-511m); p29__2 (tier 1, 39.63832,-77.72896 +/-125m); p29__3 (tier 1, 39.63796,-77.72857 +/-104m); p30 (tier 4, 39.64288,-77.72136 +/-2025m); p31__1 (tier 1, 39.66483,-77.71741 +/-100m); p37__1 (tier 1, 39.63789,-77.72514 +/-113m); p37__2 (tier 1, 39.63659,-77.72509 +/-147m); p37__3 (tier 2, 39.64095,-77.71814 +/-1230m); p37__5 (tier 1, 39.63759,-77.72473 +/-138m); p38__1 (tier 1, 39.64945,-77.69817 +/-142m); p38__2 (tier 3, 39.65337,-77.71099 +/-1044m); p38__3 (tier 1, 39.65033,-77.69892 +/-195m); p39__1 (tier 1, 39.63932,-77.73691 +/-136m); p39__2 (tier 1, 39.63958,-77.73622 +/-110m); p39__3 (tier 3, 39.63847,-77.73409 +/-511m); p40__1 (tier 1, 39.63677,-77.72292 +/-186m); p40__2 (tier 1, 39.63728,-77.72366 +/-208m); p8__1 (tier 1, 39.64341,-77.72665 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0010__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 | 1918 | sanborn03609_006 p10 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"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":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0010__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1345.2,253.7 177.8,221.8 185.0,913.1 448.4,1487.4 836.1,1494.0 866.3,1555.7 1350.0,1557.8 1345.2,253.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0010__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1347.0,1206.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7201203,39.6380597]}},{"type":"Feature","properties":{"resourceCoords":[1347.0,1833.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7209078,39.6370654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,996.1 1613.0,1913.0 1009.9,1913.0 1010.5,1810.0 859.2,1810.0 856.6,1913.0 81.7,1913.0 77.9,61.9 1335.8,65.2 1331.7,990.6 1613.0,996.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71901108876538,39.63974780119723]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71566489772377,39.638161387634575]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71809093735718,39.6350836580439]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72143712839879,39.63667007160655]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"64.0,1855.5 60.4,0.0 1359.0,0.0 1607.2,1855.4 64.0,1855.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71465953993373,39.6451995569673]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7113488639343,39.64361684030828]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71376944172401,39.640572017562654]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71708011772344,39.64215473422167]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p13","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1331.8,1732.8 187.0,1732.0 182.2,175.2 1331.8,169.2 1331.8,1732.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1330.0,945.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7158703,39.6434578]}},{"type":"Feature","properties":{"resourceCoords":[187.0,1732.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7192767,39.6433142]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1411.5,177.8 1423.8,1744.3 265.6,1748.8 257.2,178.0 1411.5,177.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0014/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7199775234427,39.64752309762339]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71664789675758,39.645918029865115]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71910273966938,39.64285588019988]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7224323663545,39.64446094795816]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p15","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"196.0,1746.0 187.1,282.1 670.2,273.4 667.6,169.8 1449.5,158.0 1480.7,1733.7 196.0,1746.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[196.0,1746.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7243273,39.6457348]}},{"type":"Feature","properties":{"resourceCoords":[1450.0,158.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.719675,39.6469822]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,0.0 1613.0,1855.9 52.7,1863.4 44.8,722.5 227.3,806.9 122.5,62.9 586.7,56.5 593.0,0.0 1613.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7252379812644,39.6502532510801]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72194420190306,39.64866248740813]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7243772629198,39.64563342393906]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72767104228114,39.64722418761103]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1355.2,721.5 1352.5,1847.7 81.8,1836.5 122.3,174.3 214.0,193.6 225.1,0.0 1254.4,0.0 1437.9,71.2 1534.5,806.5 1355.2,721.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72796952117424,39.65156284239877]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72461320054468,39.64997549844017]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72704107814334,39.64688897980793]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.73039739877291,39.64847632376653]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1297.7,1913.0 -0.0,1913.0 -0.0,0.0 1613.0,-0.0 1613.0,204.3 1520.3,190.4 1575.2,1852.8 1295.5,1867.2 1297.7,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0018/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7307190139226,39.65309067206127]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72748670593164,39.65135748038446]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.73013771810298,39.64838506969623]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.73337002609394,39.65011826137304]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p19","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1388.0,154.0 1387.5,1711.8 224.0,1726.5 221.2,158.3 1388.0,154.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[224.0,1726.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7172919,39.6458339]}},{"type":"Feature","properties":{"resourceCoords":[1388.0,154.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7128756,39.6471836]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"16"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"17.7,1732.2 36.8,110.7 1561.5,146.0 1580.0,196.5 1613.0,185.1 1613.0,863.1 1522.8,896.8 1518.5,941.1 1613.0,1249.4 1613.0,1769.3 17.7,1732.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[802.0,936.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7162883,39.6401137]}},{"type":"Feature","properties":{"resourceCoords":[1271.0,1760.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7163227,39.6383291]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0020","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1408.6,1831.4 240.4,1823.8 243.9,115.6 161.5,0.0 1426.0,0.0 1408.6,1831.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0020/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71787981397992,39.65011260354932]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71457610653438,39.64854373514156]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71697567484107,39.64550553634112]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7202793822866,39.64707440474888]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p21","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"780.9,1913.0 304.5,1913.0 306.2,1539.4 -0.0,1536.1 -0.0,-0.0 482.4,0.0 496.4,93.2 505.9,151.7 1151.4,0.0 1447.1,0.0 1549.4,143.5 1551.1,1813.2 780.1,1810.8 780.9,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0021/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7206037,39.6514632]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7172061,39.6498613]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7196734,39.64675879999999]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.723071,39.6483607]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0022__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 | 1918 | sanborn03609_006 p22 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0022__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1801.3 1613.0,927.2 1084.0,931.0 1015.9,335.6 1015.7,335.6 726.6,335.2 694.4,0.0 -0.0,-0.0 -0.0,873.8 44.5,869.7 -0.0,1126.1 -0.0,1913.0 155.6,1913.0 163.4,1889.9 893.9,1806.0 1106.4,1861.7 1613.0,1801.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0022__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[900.0,1808.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7253519,39.6503197]}},{"type":"Feature","properties":{"resourceCoords":[650.0,784.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7243959,39.6519403]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0022__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 | 1918 | sanborn03609_006 p22 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"4062.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2389.2"},{"label":"split_canvas_h","value":"3724.0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0022__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,321.6 1574.0,332.1 1516.5,-0.0 1149.9,0.0 1015.9,335.3 1015.7,335.6 1015.9,335.6 1084.0,931.0 1613.0,927.2 1613.0,321.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0022__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1266.4,650.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7267104,39.6525283]}},{"type":"Feature","properties":{"resourceCoords":[1266.4,865.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7270967,39.6522599]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0023__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 | 1918 | sanborn03609_006 p23 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0023__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0023","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"981.8,1906.0 1015.8,1913.0 1214.3,1907.3 1214.8,1720.9 1216.5,1244.6 1613.0,1239.8 1613.0,0.0 -0.0,0.0 -0.0,1705.4 313.5,1769.5 306.5,1913.0 981.2,1913.0 981.8,1906.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0023__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[473.0,128.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7178693,39.6537622]}},{"type":"Feature","properties":{"resourceCoords":[1239.0,1871.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7175639,39.6502177]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0024","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1507.1,1799.1 333.1,1806.7 337.0,1553.7 -0.0,1555.6 -0.0,19.4 38.3,76.4 758.5,17.1 664.1,212.3 1503.4,170.5 1507.1,1799.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0024/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71367543326716,39.6515233554334]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71037373810258,39.649934766837006]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71280351894788,39.64689848196628]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71610521411246,39.64848707056267]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p25","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,-0.0 1613.0,1913.0 1555.5,1913.0 35.6,1566.4 235.2,1025.5 224.2,734.4 -0.0,736.3 -0.0,48.0 591.6,59.7 613.7,-0.0 1613.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0025/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7083954035651,39.642841988147595]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.70916904984942,39.639858399364975]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71373201821658,39.640569932545255]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71295837193226,39.643553521327874]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0026__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 | 1918 | sanborn03609_006 p26 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3649.2"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0026__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 912.3,1913.0 911.8,1126.5 911.2,0.0 105.8,0.0 66.3,366.6 -0.0,543.8 -0.0,910.1 87.3,947.4 99.2,1132.7 -0.0,1384.2 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0026__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[104.0,1209.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7152323,39.6372768]}},{"type":"Feature","properties":{"resourceCoords":[86.0,40.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7147853,39.6394209]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0026__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 | 1918 | sanborn03609_006 p26 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"3644.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2807.2"},{"label":"split_canvas_h","value":"4506.0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0026__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1457.0,0.0 1455.1,106.5 1163.6,106.6 911.2,106.6 911.8,1126.5 1613.0,1121.0 1613.0,0.0 1457.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0026__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1454.0,163.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7197322,39.635741]}},{"type":"Feature","properties":{"resourceCoords":[1454.0,1001.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7207709,39.634442]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0026__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 | 1918 | sanborn03609_006 p26 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"3647.2"},{"label":"split_canvas_y","value":"4484.0"},{"label":"split_canvas_w","value":"2804.8"},{"label":"split_canvas_h","value":"3168.0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0026__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 1613.0,1121.0 911.8,1126.5 912.3,1913.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0026__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[911.8,1121.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7117717746037,39.63468266805628]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1121.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71011460380082,39.63438211966702]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71055525792265,39.63293981837905]}},{"type":"Feature","properties":{"resourceCoords":[911.8,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71221242872554,39.633240366768305]}},{"type":"Feature","properties":{"resourceCoords":[1211.5,1957.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7115289,39.6330312]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0027","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1564.9,1571.6 1613.0,1571.0 1613.0,1913.0 -0.0,1913.0 -0.0,575.8 465.1,577.3 466.6,73.8 430.6,0.0 807.4,0.0 837.4,59.2 1307.4,53.3 1316.2,606.9 1558.7,603.8 1564.9,1571.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0027/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72322697131018,39.638922944825154]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71984495025555,39.63727294428749]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72236819707749,39.6341622175432]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72575021813212,39.635812218080865]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p28","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0028","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1295.3,0.0 1293.3,209.9 1613.0,222.8 1613.0,1820.5 509.2,1913.0 511.7,1860.0 386.8,1869.1 389.9,1913.0 -0.0,1913.0 -0.0,17.2 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1024.0,762.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7267976,39.6381093]}},{"type":"Feature","properties":{"resourceCoords":[1110.0,1875.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7279872,39.6362131]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p3","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"18"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1356.5,1774.2 190.3,1725.4 208.5,113.2 1374.4,131.8 1356.5,1774.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[608.0,936.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7194555,39.6416201]}},{"type":"Feature","properties":{"resourceCoords":[608.0,1347.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7199596,39.6409623]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0031__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 | 1918 | sanborn03609_006 p31 [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":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0031__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0031","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"980.1,1913.0 1613.0,1913.0 1613.0,561.8 1613.0,116.5 222.5,112.7 222.4,81.2 -0.0,115.7 -0.0,585.3 124.2,1210.0 265.8,1592.8 406.5,1592.2 409.5,1913.0 980.1,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0031__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1102.0,558.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7318633,39.6442862]}},{"type":"Feature","properties":{"resourceCoords":[692.0,558.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7326971,39.6446867]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p32","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0032","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1626.7 195.0,0.0 1613.0,0.0 1613.0,1913.0 -0.0,1913.0 -0.0,1626.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0032/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1306.0,831.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7245446,39.6250528]}},{"type":"Feature","properties":{"resourceCoords":[759.0,831.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7258306,39.6252577]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p33","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0033","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 -0.0,47.0 58.3,45.8 55.7,23.7 310.9,0.0 1613.0,0.0 1613.0,1034.7 1460.8,1085.0 1613.0,1800.1 1613.0,1913.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0033/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.73017923178541,39.633087134334495]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72357490524487,39.63014154242537]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72807890722841,39.6240662980985]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.73468323376895,39.62701189000762]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0034__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 | 1918 | sanborn03609_006 p34 [1]","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"18"},{"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":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0034__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0034","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1175.8,816.8 1390.2,854.6 1430.0,854.8 1505.4,621.1 1433.0,622.6 1445.8,562.2 1597.6,310.2 1523.3,261.6 1613.0,0.0 -0.0,-0.0 -0.0,1913.0 931.5,1913.0 929.8,1312.1 963.9,928.4 970.6,852.3 1054.2,852.8 1170.3,853.4 1175.8,816.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0034__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1007.0,320.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7339859,39.6480603]}},{"type":"Feature","properties":{"resourceCoords":[33.0,896.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7392225,39.6467675]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0034__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 | 1918 | sanborn03609_006 p34 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"3719.2"},{"label":"split_canvas_y","value":"3409.2"},{"label":"split_canvas_w","value":"2732.8"},{"label":"split_canvas_h","value":"4242.8"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0034__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0034","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1256.6,1913.0 1257.8,1893.9 1315.4,1896.8 1314.3,1874.7 1613.0,1872.0 1613.0,1317.0 1613.0,1146.0 1613.0,855.8 1559.4,855.5 1558.2,872.9 990.4,881.5 994.7,852.5 970.6,852.3 963.9,928.4 929.8,1312.1 931.5,1913.0 1256.6,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0034__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[952.8,1403.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7305692,39.6350532]}},{"type":"Feature","properties":{"resourceCoords":[1299.4,882.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7279872,39.6362131]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p35","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0035","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"372.6,1881.5 419.6,1782.3 55.0,1815.0 35.4,1786.4 36.4,1913.0 -0.0,1913.0 -0.0,-0.0 1613.0,0.0 1613.0,1543.7 1171.8,1548.5 1171.3,1623.6 777.2,1661.0 797.5,1857.2 372.6,1881.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0035/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.70930940251698,39.657132798722174]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.70282213515844,39.65395903401536]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.70767671357264,39.64799354283521]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71416398093118,39.651167307542025]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p36","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0036","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1122.7,1751.4 1162.7,1856.7 1031.2,1913.0 734.3,1913.0 712.3,1766.7 60.5,1766.3 70.3,325.4 50.0,107.2 440.4,74.4 441.8,0.0 1613.0,0.0 1613.0,1168.1 1613.0,1223.9 1613.0,1671.9 1613.0,1913.0 1547.7,1913.0 1449.5,1629.8 1122.4,1750.5 1122.7,1751.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0036/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71033295698157,39.65086134496593]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.70373479527188,39.64771022738679]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.70855428757814,39.6416422007626]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71515244928783,39.64479331834174]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0037__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p37 [4]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"3518.8"},{"label":"split_canvas_y","value":"3461.6"},{"label":"split_canvas_w","value":"2933.2"},{"label":"split_canvas_h","value":"4190.4"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0037__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0037","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 1613.0,1081.5 1531.6,908.2 1433.9,905.5 1418.6,866.6 1301.0,866.4 1301.7,901.8 944.6,898.4 944.6,1864.5 1237.3,1870.8 1237.5,1913.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0037__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[944.6,898.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7163227,39.6383291]}},{"type":"Feature","properties":{"resourceCoords":[944.6,1865.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7175049,39.6368443]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1360.0,154.3 1358.0,1756.1 182.2,1746.3 195.2,147.4 1360.0,154.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72189120470065,39.644885528373045]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.71856046000386,39.64331496807488]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.7209624346737,39.640251673639696]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72429317937049,39.64182223393786]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1457.4,1749.3 294.9,1747.9 96.8,1716.2 168.1,947.5 159.6,139.8 1458.8,141.3 1457.4,1749.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72447696186647,39.646112817599956]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72117940820097,39.644532467906544]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72359639758547,39.64149975338393]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72689395125097,39.643080103077345]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1562.6,857.5 1498.7,1913.0 74.2,1913.0 61.1,1151.3 -0.0,1134.9 24.0,903.0 2.8,92.9 1537.3,58.4 1562.6,857.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72738351592538,39.6474003089399]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72409603923862,39.64574968792444]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72662054683057,39.64272629511355]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72990802351734,39.644376916129005]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 -0.0,1881.8 210.1,1848.8 200.8,1341.3 63.6,1392.2 48.6,1269.0 173.5,689.8 -0.0,646.8 -0.0,43.8 1572.6,41.8 1579.8,860.5 1551.6,1094.3 1613.0,1112.0 1613.0,1913.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.73065472815176,39.64886681879538]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72736485981434,39.64727687038484]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72979662525867,39.644251343106376]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.73308649359609,39.645841291516916]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0008__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 | 1918 | sanborn03609_006 p8 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0008__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1563.7,86.7 409.4,60.6 213.2,24.9 193.1,319.4 -0.0,311.2 0.0,1248.1 342.4,1243.8 466.2,1759.8 466.1,1744.2 1519.9,1718.7 1563.7,86.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0008__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1525.0,1428.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7254471,39.6397947]}},{"type":"Feature","properties":{"resourceCoords":[1226.0,81.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.7244058,39.642243]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hagerstown, Maryland | 1918 | sanborn03609_006 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:11:57Z","modified":"2026-09-22T10:11:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1302.2,736.5 1613.0,1402.1 1613.0,1913.0 384.4,1913.0 379.1,1703.5 127.0,1713.6 128.1,100.4 1292.1,88.7 1302.2,736.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844hm:g3844hm_g036091918:03609_1918-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72384063056796,39.64220204673823]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72051421414069,39.64056794673282]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72301326757155,39.63750851397948]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.72633968399882,39.63914261398489]}}]}}]}