{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02760_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Mount Pleasant, Iowa | 1899 | 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:gmd415m:g4154m:g4154mm:g027601899:02760_1899-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1899 | sanborn02760_003 p1 [1]","metadata":[{"label":"streets","value":"40"},{"label":"intersections","value":"153"},{"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":"4514.1"}],"created":"2026-09-23T04:50:07Z","modified":"2026-09-23T04:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601899:02760_1899-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601899:02760_1899-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,0.0 -0.0,-0.0 0.0,1006.7 56.6,1006.7 943.0,1005.8 956.1,1125.2 1613,1128.5 1613,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601899:02760_1899-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1095.2,869.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.556696,40.96259]}},{"type":"Feature","properties":{"resourceCoords":[916.6,698.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5602125,40.9660416]}}]}}]}