{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02559_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Algona, Iowa | 1892 | 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":"14"},{"label":"placed","value":"4"},{"label":"unplaced","value":"10"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 13 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 43.06827,-94.23756 +/-313m); p1__10 (tier 4, 43.06827,-94.23756 +/-313m); p1__11 (tier 4, 43.06827,-94.23756 +/-313m); p1__2 (tier 4, 43.06827,-94.23756 +/-313m); p1__3 (tier 4, 43.06827,-94.23756 +/-313m); p1__4 (tier 4, 43.06827,-94.23756 +/-313m); p1__5 (tier 1, 43.06951,-94.21297 +/-100m); p1__6 (tier 4, 43.06827,-94.23756 +/-313m); p1__7 (tier 4, 43.06827,-94.23756 +/-313m); p1__9 (tier 4, 43.06827,-94.23756 +/-313m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0001__8/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algona, Iowa | 1892 | sanborn02559_002 p1 [8]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.67"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3752.8"},{"label":"split_canvas_y","value":"3771.2"},{"label":"split_canvas_w","value":"2699.2"},{"label":"split_canvas_h","value":"2312.8"}],"created":"2026-10-18T16:38:53Z","modified":"2026-10-18T16:38:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0001__8/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1597.2,1001.3 1336.1,999.8 956.2,1001.9 951.1,1493.8 1415.0,1519.2 1565.6,1473.0 1597.2,1001.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0001__8/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1336.1,999.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.235462,43.066881]}},{"type":"Feature","properties":{"resourceCoords":[1336.1,1495.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.235448,43.065901]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algona, Iowa | 1892 | sanborn02559_002 p2","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T16:38:53Z","modified":"2026-10-18T16:38:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"104.7,1376.6 102.3,1169.8 114.8,330.7 113.4,33.1 1543.1,46.9 1573.1,1841.1 853.7,1885.8 852.9,1898.4 580.6,1897.7 184.4,1901.3 184.6,1881.1 95.9,1878.0 104.7,1376.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1058.0,853.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.234243,43.068867]}},{"type":"Feature","properties":{"resourceCoords":[1541.0,853.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.2329902,43.0688735]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algona, Iowa | 1892 | sanborn02559_002 p3 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.29"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5534.0"},{"label":"split_canvas_w","value":"2310.0"},{"label":"split_canvas_h","value":"2118.0"}],"created":"2026-10-18T16:38:53Z","modified":"2026-10-18T16:38:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"505.7,1410.3 504.6,1425.3 393.6,1454.8 271.2,1402.7 257.2,1464.2 121.2,1460.7 142.1,1403.0 43.4,1458.7 40.5,1568.8 92.2,1576.7 72.9,1822.5 266.9,1872.2 337.3,1872.9 480.7,1846.0 487.0,1874.5 541.5,1875.0 541.5,1411.5 505.7,1410.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[541.5,1875.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.240395,43.06886]}},{"type":"Feature","properties":{"resourceCoords":[541.5,1411.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.2404292,43.0698247]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algona, Iowa | 1892 | sanborn02559_002 p3 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"25"},{"label":"confidence","value":"0.88"},{"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":"2026-10-18T16:38:53Z","modified":"2026-10-18T16:38:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"52.0,885.9 1.0,887.1 1.0,901.5 52.0,900.2 122.5,1374.3 392.0,1383.5 577.5,1383.5 582.0,1390.0 616.5,1871.1 1532.1,1899.8 1538.8,1394.2 1535.6,1185.5 1544.5,339.3 1541.8,39.2 133.4,31.7 68.7,81.8 54.4,345.1 94.2,345.5 106.0,859.0 45.6,859.8 52.0,885.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591892:02559_1892-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1059.0,859.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.237944,43.068865]}},{"type":"Feature","properties":{"resourceCoords":[106.0,859.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.240395,43.06886]}}]}}]}