{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn04420_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Worthington, Minnesota | 1907 | 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://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144wm:g044201907:04420_1907-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Worthington, Minnesota | 1907 | sanborn04420_003 p1 [1]","metadata":[{"label":"streets","value":"24"},{"label":"intersections","value":"82"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6878.4"},{"label":"split_canvas_h","value":"5550.9"}],"created":"2026-09-23T11:55:57Z","modified":"2026-09-23T11:55:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144wm:g044201907:04420_1907-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144wm:g044201907:04420_1907-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1280.7 761.2,1280.9 761.8,1344.1 765.5,1386.0 1613,1387.7 1613,0.0 0.0,-0.0 0.0,1280.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144wm:g044201907:04420_1907-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[348.7,341.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.5971547,43.6218536]}},{"type":"Feature","properties":{"resourceCoords":[391.9,230.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.5987632,43.6249003]}}]}}]}