{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03649_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Rockville, Maryland | 1915 | 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":"12"},{"label":"placed","value":"6"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef 6"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p1 (tier 4, 39.08373,-77.15080 +/-774m); p3__3 (tier 1, 39.07866,-77.15996 +/-100m); p5__1 (tier 1, 38.98516,-77.09554 +/-184m); p5__2 (tier 1, 38.96673,-77.08687 +/-195m); p6__1 (tier 4, 39.08373,-77.15080 +/-774m); p6__3 (tier 4, 39.08373,-77.15080 +/-774m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rockville, Maryland | 1915 | sanborn03649_005 p2 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"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":"2026-09-22T14:29:53Z","modified":"2026-09-22T14:29:53Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0002__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1508.0,7652.0 6452.0,7652.0 6115.4,7292.1 5771.9,6492.3 5786.7,5747.4 5973.2,5600.1 5989.0,3296.2 6003.2,3172.5 4835.6,3169.6 4393.6,4239.2 1903.2,3707.6 3374.4,0.0 -0.0,-0.0 -0.0,7652.0 1508.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1972.0,2412.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.159217,39.085678]}},{"type":"Feature","properties":{"resourceCoords":[2452.0,140.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.158966,39.086849]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rockville, Maryland | 1915 | sanborn03649_005 p2 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"1903.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4548.8"},{"label":"split_canvas_h","value":"4239.2"}],"created":"2026-09-22T14:29:53Z","modified":"2026-09-22T14:29:53Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0002__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,-0.0 3374.4,0.0 2043.5,3354.0 2363.9,3570.4 2937.4,3720.8 2884.2,3917.0 4393.6,4239.2 4835.6,3169.6 6452.0,3173.6 6452.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5304.8,2267.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.141326,39.082489]}},{"type":"Feature","properties":{"resourceCoords":[2219.0,3455.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.1435436,39.0828936]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rockville, Maryland | 1915 | sanborn03649_005 p3 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1673.2"},{"label":"split_canvas_h","value":"2602.0"}],"created":"2026-09-22T14:29:53Z","modified":"2026-09-22T14:29:53Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0003__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1336.4,2487.4 1338.5,710.2 1450.9,435.3 1340.5,435.6 1340.3,0.0 0.0,0.0 0.0,2596.4 1673.2,2602.0 1673.2,2487.6 1336.4,2487.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0003__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":[-77.15368252358975,39.08336650909215]}},{"type":"Feature","properties":{"resourceCoords":[1673.2,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.15266601090858,39.08338571426012]}},{"type":"Feature","properties":{"resourceCoords":[1673.2,2602.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.1526274714047,39.08215704722988]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2602.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.15364398408587,39.08213784206191]}},{"type":"Feature","properties":{"resourceCoords":[1337.0,435.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.1528638,39.0831761]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rockville, Maryland | 1915 | sanborn03649_005 p3 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T14:29:53Z","modified":"2026-09-22T14:29:53Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0003__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,6031.4 389.2,6889.9 761.4,7272.3 -0.0,7287.5 -0.0,7652.0 3608.0,7652.0 4396.0,7652.0 4771.6,7652.0 4772.0,6819.0 6111.3,6819.7 6112.0,1696.7 6452.0,1697.0 6452.0,0.0 2725.6,0.0 2724.4,1670.0 1672.8,1682.4 1673.2,2602.0 195.1,2597.1 133.6,3341.4 198.7,5061.2 -0.0,5140.0 -0.0,6031.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[6112.0,3360.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.1529201,39.0850143]}},{"type":"Feature","properties":{"resourceCoords":[6112.0,1592.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.1529468,39.0858485]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rockville, Maryland | 1915 | sanborn03649_005 p4","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"}],"created":"2026-09-22T14:29:53Z","modified":"2026-09-22T14:29:53Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0004/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"305.8,5864.2 418.5,5587.6 307.5,5587.9 302.2,0.0 6452.0,0.0 6452.0,7652.0 304.6,7652.0 305.8,5864.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[304.0,5588.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.1528638,39.0831761]}},{"type":"Feature","properties":{"resourceCoords":[304.0,1672.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.1529201,39.0850143]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0006__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rockville, Maryland | 1915 | sanborn03649_005 p6 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"},{"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":"2026-09-22T14:29:53Z","modified":"2026-09-22T14:29:53Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0006__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0006/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4928.0,7652.0 6452.0,7652.0 6452.0,1413.4 5768.4,1419.5 5161.9,1212.8 4832.4,-0.0 4379.2,0.0 4338.0,2404.8 1856.0,2447.6 0.0,2476.4 -0.0,7652.0 4928.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844rm:g3844rm_g036491915:03649_1915-0006__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5576.0,1336.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.1435436,39.0828936]}},{"type":"Feature","properties":{"resourceCoords":[4780.0,3548.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.144857,39.0825072]}}]}}]}