{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn04009_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Flint, Michigan | 1902 | 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:gmd411m:g4114m:g4114fm:g040091902:04009_1902-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Flint, Michigan | 1902 | sanborn04009_004 p1","metadata":[{"label":"streets","value":"57"},{"label":"intersections","value":"178"}],"created":"2026-09-23T17:44:14Z","modified":"2026-09-23T17:44:14Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114fm:g040091902:04009_1902-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114fm:g040091902:04009_1902-0001/info.json","type":"ImageService2","height":7684,"width":6524},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7684.0 -0.0,-0.0 6524.0,-0.0 6524.0,967.8 6524.0,1230.7 6524.0,1508.8 6524.0,7684.0 -0.0,7684.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114fm:g040091902:04009_1902-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3188.0,6187.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.6920134,43.0060326]}},{"type":"Feature","properties":{"resourceCoords":[3647.1,4645.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.696097,43.0171003]}}]}}]}