{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02606_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Clarksville, 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":"6"},{"label":"placed","value":"5"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 5"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 42.78760,-92.66989 +/-161m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_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":"Clarksville, Iowa | 1902 | sanborn02606_002 p1 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.82"},{"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":"2066.0"},{"label":"split_canvas_h","value":"4775.6"}],"created":"2026-10-18T17:07:24Z","modified":"2026-10-18T17:07:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"497.4,1046.4 486.4,521.1 387.1,283.1 410.0,81.7 363.9,48.3 150.8,65.7 71.1,137.1 112.3,446.8 50.2,1137.0 359.8,1160.7 497.4,1046.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[454.4,1015.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.670372,42.784699]}},{"type":"Feature","properties":{"resourceCoords":[454.4,50.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.670388,42.78651]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clarksville, Iowa | 1902 | sanborn02606_002 p1 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.56"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1704.0"},{"label":"split_canvas_w","value":"4162.0"},{"label":"split_canvas_h","value":"5948.0"}],"created":"2026-10-18T17:07:24Z","modified":"2026-10-18T17:07:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"170.8,1846.0 765.7,1832.4 821.7,1736.5 816.4,1557.5 988.3,1593.4 1004.9,1276.8 868.0,1186.1 814.2,1034.1 742.9,1028.0 727.9,1028.0 727.5,1028.0 727.5,1026.7 724.8,1026.5 707.1,688.9 639.6,536.8 541.2,749.4 516.8,1096.0 516.8,1138.0 516.8,1193.9 509.7,1196.7 123.9,1200.0 123.8,1193.9 78.8,1193.9 76.0,1361.0 68.1,1844.9 115.3,1844.5 170.8,1846.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[76.0,1361.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.666502,42.781037]}},{"type":"Feature","properties":{"resourceCoords":[992.5,1361.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.66648,42.7792423]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0001__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clarksville, Iowa | 1902 | sanborn02606_002 p1 [4]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.74"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3288.0"},{"label":"split_canvas_y","value":"4112.0"},{"label":"split_canvas_w","value":"3164.0"},{"label":"split_canvas_h","value":"3540.0"}],"created":"2026-10-18T17:07:24Z","modified":"2026-10-18T17:07:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0001__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1347.5,1830.0 1572.4,1879.8 1574.5,1057.5 920.4,1062.8 906.0,1189.3 994.1,1193.9 1040.5,1193.9 1040.5,1196.3 1046.6,1196.7 1095.4,1379.5 1059.6,1632.5 848.5,1681.1 855.2,1800.6 967.5,1892.3 1220.7,1892.9 1347.5,1830.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0001__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[822.0,1028.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.67639668051501,42.782616565458305]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1028.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.67432961058985,42.78262044676628]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.67432369806538,42.78092183590848]}},{"type":"Feature","properties":{"resourceCoords":[822.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.67639076799054,42.780917954600504]}},{"type":"Feature","properties":{"resourceCoords":[1416.0,1839.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.674839,42.7810629]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clarksville, Iowa | 1902 | sanborn02606_002 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:07:24Z","modified":"2026-10-18T17:07:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1361.2,1810.9 96.8,1839.8 51.5,1519.8 71.2,256.0 128.4,96.8 295.4,63.8 1344.5,32.8 1516.8,159.6 1538.8,270.5 1491.3,269.5 1472.5,1328.8 1465.9,1820.1 1418.2,1819.8 1390.8,1822.4 1361.2,1810.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1011.0,834.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.666528,42.7846672]}},{"type":"Feature","properties":{"resourceCoords":[79.0,834.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.666553,42.7864774]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clarksville, Iowa | 1902 | sanborn02606_002 p3","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:07:24Z","modified":"2026-10-18T17:07:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"62.5,1630.3 79.2,1872.0 1523.6,1878.0 1572.9,1827.7 1557.6,1059.5 1612.0,1057.2 1612.0,1055.0 1554.7,1056.7 1506.0,1058.1 1504.3,558.0 1503.8,385.4 1550.2,384.4 1540.2,92.0 1361.8,37.0 1127.5,82.2 835.2,35.5 131.1,57.2 118.8,1.0 70.0,1.0 73.3,1085.3 76.8,1588.7 28.1,1589.5 1.0,1590.0 1.0,1593.2 62.5,1630.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g026061902:02606_1902-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[551.0,1076.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.667814,42.782855]}},{"type":"Feature","properties":{"resourceCoords":[1503.0,85.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.66528,42.78103]}}]}}]}