{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02556_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Akron, Iowa | 1913 | mapsnap generated fit (2026-10-17)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-17"},{"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, 42.82855,-96.55955 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025561913:02556_1913-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Akron, Iowa | 1913 | sanborn02556_001 p1 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.68"},{"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":"2026-10-17T21:17:34Z","modified":"2026-10-17T21:17:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025561913:02556_1913-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025561913:02556_1913-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"520.2,20.1 162.9,55.0 82.5,113.0 125.7,251.7 59.4,419.1 42.0,1096.8 107.0,1250.2 55.0,1461.3 120.5,1490.8 156.2,1687.7 294.5,1717.5 345.2,1790.5 702.0,1886.8 1387.2,1882.3 1547.7,1832.0 1580.2,1045.0 1536.7,979.2 1381.9,973.0 1337.0,973.0 1337.0,971.2 1332.7,971.0 1282.7,708.4 1277.2,292.9 1328.9,125.5 1394.6,96.7 1365.6,60.1 520.2,20.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025561913:02556_1913-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[713.0,466.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.5583154,42.8287309]}},{"type":"Feature","properties":{"resourceCoords":[377.0,978.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.559611,42.8293488]}}]}}]}