{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn07543_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Boyertown, Pennsylvania | 1909 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"10"},{"label":"placed","value":"5"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef 4, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 9 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 40.37911,-75.92114 +/-269m); p1__2 (tier 2, 40.33352,-75.64020 +/-100m); p1__3 (tier 1, 40.33633,-75.63531 +/-171m); p2__1 (tier 2, 40.33294,-75.63600 +/-388m); p2__2 (tier 1, 40.33234,-75.64202 +/-100m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boyertown, Pennsylvania | 1909 | sanborn07543_005 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T18:42:13Z","modified":"2026-09-21T18:42:13Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0003/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 166.1,-0.0 179.0,272.5 6362.1,-0.0 6424.3,7478.7 3514.3,7348.7 -0.0,7652.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-75.6375079150325,40.336176640527306]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-75.63437171851223,40.33410980483958]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-75.63756482830874,40.331254473096145]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-75.64070102482901,40.33332130878387]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boyertown, Pennsylvania | 1909 | sanborn07543_005 p4 [1]","metadata":[{"label":"streets","value":"5"},{"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":"2026-09-21T18:42:13Z","modified":"2026-09-21T18:42:13Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0004__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,3285.3 0.0,7652.0 6452.0,7652.0 6452.0,7114.0 6452.0,0.0 5288.0,0.0 4984.0,0.0 1595.2,0.0 1596.4,2598.0 956.2,2603.1 700.5,3467.2 0.0,3285.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3428.0,3200.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.6326639,40.3304599]}},{"type":"Feature","properties":{"resourceCoords":[3428.0,5692.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.631311,40.3299498]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boyertown, Pennsylvania | 1909 | sanborn07543_005 p4 [2]","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":"1596.4"},{"label":"split_canvas_h","value":"2610.8"}],"created":"2026-09-21T18:42:13Z","modified":"2026-09-21T18:42:13Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0004__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1595.2,35.2 1595.2,0.0 -0.0,-0.0 -0.0,2610.8 1508.9,2598.7 1595.2,35.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-75.63511354222457,40.329550121710064]}},{"type":"Feature","properties":{"resourceCoords":[1596.4,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-75.63445680204887,40.330127784603185]}},{"type":"Feature","properties":{"resourceCoords":[1596.4,2610.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-75.63321563985198,40.32930909346859]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2610.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-75.63387238002768,40.328731430575466]}},{"type":"Feature","properties":{"resourceCoords":[472.1,2362.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.633796,40.32898]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boyertown, Pennsylvania | 1909 | sanborn07543_005 p5 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5096.4"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"2555.6"}],"created":"2026-09-21T18:42:13Z","modified":"2026-09-21T18:42:13Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0005__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0005/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5976.0,5648.3 3011.9,5517.1 916.0,5793.8 0.0,5784.8 0.0,7652.0 6452.0,7652.0 6452.0,5096.4 5953.0,5096.6 5976.0,5648.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[916.0,5792.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.6401608,40.3329871]}},{"type":"Feature","properties":{"resourceCoords":[5976.0,5648.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.637506,40.331328]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0005__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boyertown, Pennsylvania | 1909 | sanborn07543_005 p5 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"},{"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":"5099.2"}],"created":"2026-09-21T18:42:13Z","modified":"2026-09-21T18:42:13Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0005__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0005/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,-0.0 -0.0,-0.0 -0.0,4592.0 6341.7,4659.6 6324.7,5096.5 6452.0,5096.4 6452.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075431909:07543_1909-0005__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3120.0,4591.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.635987,40.335106]}},{"type":"Feature","properties":{"resourceCoords":[896.0,4591.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.63709,40.335756]}}]}}]}