{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn07123_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Henryetta, Oklahoma | 1920 | key map | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd402m:g4024m:g4024hm:g4024hm_g071231920:07123_1920-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Henryetta, Oklahoma | 1920 | sanborn07123_004 p1","metadata":[{"label":"streets","value":"65"},{"label":"intersections","value":"223"}],"created":"2026-09-23T05:49:20Z","modified":"2026-09-23T05:49:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd402m:g4024m:g4024hm:g4024hm_g071231920:07123_1920-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd402m:g4024m:g4024hm:g4024hm_g071231920:07123_1920-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7652.0 0.0,0.0 6452.0,0.0 6452.0,7652.0 -0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd402m:g4024m:g4024hm:g4024hm_g071231920:07123_1920-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1190.4,4208.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.002999,35.4386756]}},{"type":"Feature","properties":{"resourceCoords":[2188.7,3661.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.9934357,35.4429473]}}]}}]}