{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn07721_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Homer City, Pennsylvania | 1910 | 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":"2"},{"label":"placed","value":"2"},{"label":"unplaced","value":"0"},{"label":"fit sources","value":"georef 1, georef-snap 1"},{"label":"key map","value":"none"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824hm:g07721001:sb000010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Homer City, Pennsylvania | 1910 | sanborn07721_001 p1","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-21T13:39:03Z","modified":"2026-09-21T13:39:03Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824hm:g07721001:sb000010/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824hm:g07721001:sb000010/info.json","type":"ImageService2","height":10376,"width":8784},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,10376.0 -0.0,5957.0 746.5,6390.4 4392.7,-0.0 8784.0,-0.0 8784.0,10376.0 -0.0,10376.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824hm:g07721001:sb000010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5448.0,3188.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.159228,40.539403]}},{"type":"Feature","properties":{"resourceCoords":[3712.0,1140.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.159331,40.540308]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824hm:g07721001:sb000020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Homer City, Pennsylvania | 1910 | sanborn07721_001 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:39:03Z","modified":"2026-09-21T13:39:03Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824hm:g07721001:sb000020/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824hm:g07721001:sb000020/info.json","type":"ImageService2","height":10368,"width":8804},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 8804.0,0.0 8804.0,10368.0 -0.0,10368.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824hm:g07721001:sb000020/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.16371383542217,40.542676709334515]}},{"type":"Feature","properties":{"resourceCoords":[8804.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.16012041221357,40.543943956500456]}},{"type":"Feature","properties":{"resourceCoords":[8804.0,10368.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.1581703561831,40.54070539225876]}},{"type":"Feature","properties":{"resourceCoords":[0.0,10368.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.1617637793917,40.53943814509282]}}]}}]}