{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02570_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Atlantic, Iowa | 1883 | 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"},{"label":"pages","value":"5"},{"label":"placed","value":"3"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 3"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 3 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 41.41061,-95.01372 +/-259m); p1__2 (tier 1, 41.40994,-95.01053 +/-141m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Atlantic, Iowa | 1883 | sanborn02570_001 p1 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"4622.0"},{"label":"split_canvas_y","value":"4987.6"},{"label":"split_canvas_w","value":"1830.0"},{"label":"split_canvas_h","value":"2664.4"}],"created":"2026-09-22T04:26:54Z","modified":"2026-09-22T04:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1467.2,1261.9 1155.5,1246.9 1162.5,1913.0 1464.2,1913.0 1467.2,1261.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1467.2,1755.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.014401,41.408005]}},{"type":"Feature","properties":{"resourceCoords":[1467.2,1261.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.0144018,41.4090205]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Atlantic, Iowa | 1883 | sanborn02570_001 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"}],"created":"2026-09-22T04:26:54Z","modified":"2026-09-22T04:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,-0.0 1613.0,1913.0 119.2,1913.0 101.4,36.9 -0.0,37.5 -0.0,0.0 1613.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1183.0,1235.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.0130382,41.4050041]}},{"type":"Feature","properties":{"resourceCoords":[645.0,106.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.010228,41.405965]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Atlantic, Iowa | 1883 | sanborn02570_001 p3","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"}],"created":"2026-09-22T04:26:54Z","modified":"2026-09-22T04:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1220.1,1790.3 493.7,1795.7 494.7,1913.0 -0.0,1913.0 -0.0,0.0 1588.2,-0.0 1595.1,1913.0 1224.0,1913.0 1220.1,1790.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1048.0,1213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.01299,41.407989]}},{"type":"Feature","properties":{"resourceCoords":[1048.0,69.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.010188,41.407965]}}]}}]}