{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02770_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"New Market, Iowa | 1912 | 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":"3"},{"label":"placed","value":"2"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 3 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 40.73129,-94.89931 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154nm:g027701912:02770_1912-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"New Market, Iowa | 1912 | sanborn02770_001 p1 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.83"},{"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":"2026-10-18T03:17:05Z","modified":"2026-10-18T03:17:05Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154nm:g027701912:02770_1912-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154nm:g027701912:02770_1912-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"56.6,36.6 36.1,1762.8 55.0,1871.2 1580.5,1865.2 1608.2,434.2 1495.4,43.0 1402.5,19.1 1336.0,89.5 1271.5,80.7 1189.2,208.2 1161.0,485.8 1161.0,486.0 1161.0,486.0 1060.0,492.8 1018.5,486.0 885.5,486.0 885.5,486.0 852.1,458.9 812.1,33.5 56.6,36.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154nm:g027701912:02770_1912-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[820.0,1633.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.8993662,40.7300626]}},{"type":"Feature","properties":{"resourceCoords":[337.0,1633.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.9005613,40.7300405]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154nm:g027701912:02770_1912-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"New Market, Iowa | 1912 | sanborn02770_001 p1 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.26"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3535.2"},{"label":"split_canvas_y","value":"967.2"},{"label":"split_canvas_w","value":"1108.8"},{"label":"split_canvas_h","value":"976.8"}],"created":"2026-10-18T03:17:05Z","modified":"2026-10-18T03:17:05Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154nm:g027701912:02770_1912-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154nm:g027701912:02770_1912-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1161.0,486.0 1161.0,241.8 883.8,241.8 885.5,486.0 1161.0,486.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154nm:g027701912:02770_1912-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[883.8,241.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.89952391634448,40.73148324924572]}},{"type":"Feature","properties":{"resourceCoords":[1161.0,241.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.89883593813798,40.73149166027596]}},{"type":"Feature","properties":{"resourceCoords":[1161.0,486.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.8988261555406,40.731032237763436]}},{"type":"Feature","properties":{"resourceCoords":[883.8,486.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.8995141337471,40.7310238267332]}},{"type":"Feature","properties":{"resourceCoords":[934.6,459.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.899389,40.731076]}}]}}]}