{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02709_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Lake Mills, Iowa | 1935 | 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":"4"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 8 panels"},{"label":"unplaced pages","value":"p1 (tier 4, 43.41863,-93.53366 +/-397m); p2__1 (tier 2, 43.41977,-93.53443 +/-161m); p3__3 (tier 2, 43.41976,-93.53444 +/-158m); p3__4 (tier 2, 43.41976,-93.53444 +/-158m); p3__5 (tier 2, 43.41976,-93.53444 +/-158m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lake Mills, Iowa | 1935 | sanborn02709_003 p2 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.94"},{"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":"2026-10-18T22:37:03Z","modified":"2026-10-18T22:37:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"110.0,1464.2 110.1,1464.9 120.6,1546.3 334.1,1623.5 398.1,1758.2 657.2,1884.0 1574.5,1835.1 1604.3,1740.0 1591.6,1243.9 1586.2,754.7 1569.5,246.1 1585.5,74.4 587.8,33.6 120.4,105.5 55.8,1009.7 145.0,1462.6 110.0,1464.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1098.0,759.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.5337157,43.420231]}},{"type":"Feature","properties":{"resourceCoords":[602.0,1749.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.5351032,43.4184283]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lake Mills, Iowa | 1935 | sanborn02709_003 p3 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.55"},{"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":"4425.2"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T22:37:03Z","modified":"2026-10-18T22:37:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"608.4,1269.3 608.3,1262.7 609.4,1262.7 609.9,1258.9 1022.9,1258.3 1067.8,1213.2 1074.0,199.9 1013.6,27.4 540.7,80.6 217.8,28.5 147.1,95.2 122.5,272.5 116.7,800.6 100.0,1308.0 90.5,1822.9 430.5,1844.6 528.1,1806.9 608.4,1269.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[100.0,1308.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.5325058,43.4192858]}},{"type":"Feature","properties":{"resourceCoords":[1073.3,1308.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.5300982,43.4192834]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lake Mills, Iowa | 1935 | sanborn02709_003 p3 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.64"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4425.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2026.8"},{"label":"split_canvas_h","value":"1937.2"}],"created":"2026-10-18T22:37:03Z","modified":"2026-10-18T22:37:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1539.7,483.3 1574.7,483.3 1507.1,26.5 1504.0,52.0 1142.3,65.7 1120.8,7.8 1119.8,470.8 1539.3,478.9 1539.7,483.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1106.3,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.53744745491375,43.419899804347445]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.53614657022852,43.419901797869905]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,484.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.5361439528269,43.41899884648086]}},{"type":"Feature","properties":{"resourceCoords":[1106.3,484.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.53744483751213,43.4189968529584]}},{"type":"Feature","properties":{"resourceCoords":[1538.0,279.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.5363375,43.419381]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0003__6/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lake Mills, Iowa | 1935 | sanborn02709_003 p3 [6]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.03"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2440.0"},{"label":"split_canvas_y","value":"5968.0"},{"label":"split_canvas_w","value":"1985.2"},{"label":"split_canvas_h","value":"1684.0"}],"created":"2026-10-18T22:37:03Z","modified":"2026-10-18T22:37:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0003__6/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1092.0,1514.8 1071.3,1505.8 631.5,1506.0 616.5,1907.3 1096.7,1899.9 1092.0,1514.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027091935:02709_1935-0003__6/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[630.0,1515.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.5325999,43.4156768]}},{"type":"Feature","properties":{"resourceCoords":[1071.3,1515.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.5313714,43.4156507]}}]}}]}