{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn07530_006.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Bethlehem, Pennsylvania | 1951 | key map | 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"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075301951:07530_1951-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bethlehem, Pennsylvania | 1951 | sanborn07530_006 p0","metadata":[{"label":"streets","value":"146"},{"label":"intersections","value":"129"}],"created":"2026-09-21T12:17:54Z","modified":"2026-09-21T12:17:54Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075301951:07530_1951-0000/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075301951:07530_1951-0000/info.json","type":"ImageService2","height":7680,"width":6584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7680.0 -0.0,0.0 6584.0,0.0 6584.0,7680.0 -0.0,7680.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075301951:07530_1951-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2108.0,3687.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.396236,40.622559]}},{"type":"Feature","properties":{"resourceCoords":[4836.2,5203.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.3408512,40.6025533]}}]}}]}