{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03903_007.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Allegan, Michigan | 1918 | key map | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114am:g039031918:03903_1918-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Allegan, Michigan | 1918 | sanborn03903_007 p1 [2]","metadata":[{"label":"streets","value":"44"},{"label":"intersections","value":"63"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6938.1"},{"label":"split_canvas_h","value":"4182.6"}],"created":"2026-09-22T07:02:35Z","modified":"2026-09-22T07:02:35Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114am:g039031918:03903_1918-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114am:g039031918:03903_1918-0001/info.json","type":"ImageService2","height":7708,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"10.2,4182.6 6938.1,4153.6 6938.1,0.0 0.0,-0.0 -0.0,4182.6 10.2,4182.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114am:g039031918:03903_1918-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1471.8,3411.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.85425,42.523418]}},{"type":"Feature","properties":{"resourceCoords":[3554.3,909.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.8397427,42.5378325]}}]}}]}