{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn09622_001.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Milwaukee, Wisconsin | 1894 | key map | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd412m:g4124m:g4124mm:g09622189401:09622_01_1894-0000__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Milwaukee, Wisconsin | 1894 | sanborn09622_001 p0 [1]","metadata":[{"label":"streets","value":"87"},{"label":"intersections","value":"335"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"7013.9"},{"label":"split_canvas_h","value":"8217.7"}],"created":"2026-09-21T11:47:31Z","modified":"2026-09-21T11:47:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd412m:g4124m:g4124mm:g09622189401:09622_01_1894-0000__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd412m:g4124m:g4124mm:g09622189401:09622_01_1894-0000","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 0.0,1949 984.3,1949 994.5,958.6 1647,958.6 1647,0.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd412m:g4124m:g4124mm:g09622189401:09622_01_1894-0000__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[642.8,223.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.9015596,43.0711269]}},{"type":"Feature","properties":{"resourceCoords":[948.5,223.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.8903642,43.0710573]}}]}}]}