{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02749_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Monona, Iowa | 1902 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"2"},{"label":"placed","value":"1"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 2 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 43.05335,-91.39045 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027491902:02749_1902-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monona, Iowa | 1902 | sanborn02749_001 p1 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.87"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T03:44:20Z","modified":"2026-10-18T03:44:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027491902:02749_1902-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027491902:02749_1902-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"25.1,902.5 56.7,1856.3 1568.9,1881.6 1582.3,161.3 1519.3,31.5 1382.8,65.7 1346.6,132.2 1346.5,137.1 1345.7,168.6 1314.6,191.2 1243.5,322.1 920.4,368.4 555.0,342.5 554.8,340.3 547.5,340.3 547.5,283.2 515.7,33.8 71.3,35.7 25.1,902.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027491902:02749_1902-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[552.0,1171.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.3910923,43.0529387]}},{"type":"Feature","properties":{"resourceCoords":[552.0,18.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.3911278,43.0551084]}}]}}]}