{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02570_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Atlantic, Iowa | 1883 | mapsnap generated fit (2026-10-18)","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":"9"},{"label":"placed","value":"3"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef 3"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 41.40750,-95.01311 +/-211m); p1__2 (tier 4, 41.40750,-95.01311 +/-211m); p1__3 (tier 4, 41.40750,-95.01311 +/-211m); p1__4 (tier 4, 41.40750,-95.01311 +/-211m); p1__5 (tier 1, 41.39871,-95.00870 +/-172m); p1__6 (tier 4, 41.40750,-95.01311 +/-211m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0001__7/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 [7]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.02"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4625.2"},{"label":"split_canvas_y","value":"4956.0"},{"label":"split_canvas_w","value":"1826.8"},{"label":"split_canvas_h","value":"2696.0"}],"created":"2026-10-18T18:35:45Z","modified":"2026-10-18T18:35:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0001__7/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=\"1182.2,1783.5 1405.1,1888.6 1407.0,1912.0 1455.3,1912.0 1416.7,1241.9 1392.4,1265.2 1202.2,1265.1 1182.5,1357.0 1221.7,1540.7 1182.2,1783.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025701883:02570_1883-0001__7/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1467.1,1755.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.014401,41.408005]}},{"type":"Feature","properties":{"resourceCoords":[1467.1,1261.0],"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"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:45Z","modified":"2026-10-18T18:35:45Z","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=\"117.7,1810.3 1.0,1811.6 1.0,1860.9 21.1,1911.8 85.3,1830.6 1520.6,1850.0 1583.0,1666.8 1557.3,152.1 1322.7,61.4 317.3,49.3 120.8,59.9 76.8,106.8 101.2,106.7 103.9,673.0 109.5,940.5 117.7,1810.3\" /></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"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:35:45Z","modified":"2026-10-18T18:35:45Z","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=\"1.0,1749.5 1.0,1907.1 58.6,1906.4 69.1,1837.8 98.7,1839.9 131.6,1868.8 439.7,1843.3 456.5,1853.5 1377.2,1789.4 1595.7,1788.2 1592.2,911.2 1588.0,641.5 1588.5,70.6 1563.9,70.5 1550.0,38.9 654.1,41.8 111.5,106.7 49.4,267.1 10.6,276.8 1.0,1749.5\" /></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]}}]}}]}