{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn04041_001.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Holland, Michigan | 1883 | key map | mapsnap generated fit (2026-09-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-20"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114hm:g040411883:04041_1883-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Holland, Michigan | 1883 | sanborn04041_001 p1 [2]","metadata":[{"label":"streets","value":"21"},{"label":"intersections","value":"42"},{"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":"8129.9"}],"created":"2026-09-20T23:14:09Z","modified":"2026-09-20T23:14:09Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114hm:g040411883:04041_1883-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114hm:g040411883:04041_1883-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628,0.0 1548.8,0.0 -0.0,-0.0 0.0,999.2 0.0,1470.8 894.0,1464.4 895.2,1927 1628,1927 1628,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114hm:g040411883:04041_1883-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[478.2,854.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.111968,42.7830072]}},{"type":"Feature","properties":{"resourceCoords":[554.7,528.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.1089912,42.7920975]}}]}}]}