{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02760_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Mount Pleasant, Iowa | 1920 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"19"},{"label":"placed","value":"13"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef 8, georef-snap 4, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 40.96018,-91.55757 +/-160m); p1__4 (tier 1, 40.96856,-91.56438 +/-100m); p1__5 (tier 1, 40.96763,-91.56371 +/-100m); p4__3 (tier 1, 40.98107,-91.55361 +/-100m); p4__4 (tier 1, 40.97140,-91.56485 +/-100m); p8__3 (tier 1, 40.96239,-91.55722 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"37.5,159.9 28.6,1318.3 67.1,1755.2 129.8,1835.0 1543.5,1873.7 1542.8,1755.3 1531.9,1581.6 1543.0,1580.5 1544.1,108.3 952.4,108.0 372.4,121.3 1.0,128.3 1.0,153.7 37.5,159.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1529.0,1225.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.54909009087194,40.96610579390547]}},{"type":"Feature","properties":{"resourceCoords":[1529.0,1757.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.54780057934647,40.965970784551686]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p1 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.58"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3652.0"},{"label":"split_canvas_w","value":"2220.0"},{"label":"split_canvas_h","value":"1348.0"}],"created":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"412.5,1221.4 405.1,1248.0 503.6,1245.8 477.0,1128.5 494.5,957.8 461.9,932.8 422.6,967.4 342.2,941.5 267.4,984.4 99.2,959.2 47.1,980.8 22.2,958.5 19.3,1211.5 332.9,1173.4 412.5,1221.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.55912991334787,40.96193619261478]}},{"type":"Feature","properties":{"resourceCoords":[555.0,913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.55642239253638,40.96166360361588]}},{"type":"Feature","properties":{"resourceCoords":[555.0,1250.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.55664160393432,40.96042226338133]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1250.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.55934912474582,40.96069485238023]}},{"type":"Feature","properties":{"resourceCoords":[472.0,1224.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5570296,40.9605588]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p1 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.11"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2214.4"},{"label":"split_canvas_y","value":"4308.0"},{"label":"split_canvas_w","value":"4237.6"},{"label":"split_canvas_h","value":"3344.0"}],"created":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"571.5,1096.2 583.6,1906.7 591.6,1909.3 1583.8,1910.6 1598.2,1816.2 1587.1,1183.5 1579.6,1183.5 1570.1,1183.6 1055.8,1200.7 972.2,1189.7 937.5,1093.8 571.5,1096.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[553.6,1077.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.54957559461256,40.958836766982095]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1077.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.54456131382301,40.95865621226781]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.5447485521598,40.95564858833586]}},{"type":"Feature","properties":{"resourceCoords":[553.6,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.54976283294936,40.955829143050146]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.82"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"134.0,1823.3 53.0,1505.5 42.0,1061.0 61.6,1048.8 23.8,770.8 30.5,770.0 64.6,333.8 116.0,282.7 74.2,193.5 210.8,72.0 686.2,20.1 1561.8,58.5 1524.7,473.3 1569.8,623.6 1570.4,677.5 1524.8,787.8 1588.0,874.0 1586.5,1096.6 1575.8,1096.9 1582.6,1600.0 1579.8,1820.7 1580.2,1851.0 997.6,1860.1 997.7,1878.0 185.7,1874.2 179.7,1836.4 131.0,1836.6 134.0,1823.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[998.0,943.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.55204805239714,40.97315456270531]}},{"type":"Feature","properties":{"resourceCoords":[1563.0,61.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5503663239701,40.97463569972305]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"38.3,637.2 39.2,1209.5 46.2,1794.2 623.5,1794.6 1493.7,1789.2 1591.3,1788.4 1584.6,1198.8 1566.5,1198.8 1573.8,376.9 1612.0,371.0 1612.0,321.7 1564.4,310.9 1522.7,57.6 1224.2,39.0 1079.6,117.8 748.5,22.1 51.6,64.8 50.7,1.0 37.0,1.0 37.6,345.9 38.3,637.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[68.0,1789.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.55143353803513,40.96855133359491]}},{"type":"Feature","properties":{"resourceCoords":[62.0,55.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.55562345057936,40.96896922554485]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p4 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"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":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"736.7,1720.9 742.3,1769.4 1427.8,1826.5 1469.8,1895.0 1577.5,1855.2 1611.5,1698.2 1608.7,735.2 1596.7,692.7 1369.0,689.5 1246.6,689.5 1010.5,689.5 1010.5,689.5 1010.5,689.5 1004.7,684.3 1009.3,391.9 1013.0,391.8 1013.0,390.0 1075.5,390.0 1191.2,386.7 1207.3,333.8 1181.5,30.1 79.2,26.3 80.1,1.0 69.4,1.0 61.0,503.9 51.5,724.8 49.1,851.8 32.0,1712.8 736.7,1720.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[676.0,1231.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.54953274127216,40.970323834119576]}},{"type":"Feature","properties":{"resourceCoords":[603.0,482.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.54951147139853,40.97172304713174]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p4 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4986.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1465.6"},{"label":"split_canvas_h","value":"1356.0"}],"created":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1489.7,314.1 1553.1,306.0 1554.6,24.8 1264.2,17.3 1264.0,191.5 1329.2,198.9 1263.8,307.7 1489.7,314.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1246.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.55512853279426,40.97376875313375]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.5542254216383,40.97376972141478]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,339.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.55422423708951,40.97313984267228]}},{"type":"Feature","properties":{"resourceCoords":[1246.6,339.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.55512734824548,40.973138874391246]}},{"type":"Feature","properties":{"resourceCoords":[1553.1,306.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.554372,40.973201]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p5","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"25.2,1617.2 32.1,1058.2 120.9,810.4 16.1,392.5 61.5,48.1 1197.3,22.1 1197.4,35.6 1540.2,31.7 1544.2,31.6 1576.7,584.0 1564.2,1167.2 1555.7,1167.2 1567.8,1752.8 1563.9,1752.9 1284.0,1755.0 456.8,1770.3 181.1,1773.6 55.5,1779.6 25.2,1617.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[726.0,591.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.557108,40.9680427]}},{"type":"Feature","properties":{"resourceCoords":[1284.0,1755.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5561619,40.9657549]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p6","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"101.4,1813.8 98.1,1223.7 106.8,1223.9 128.3,636.8 127.0,636.8 104.2,80.0 391.0,81.0 962.4,83.3 1546.2,79.8 1542.0,645.0 1541.9,1047.1 1544.5,1225.1 1539.0,1818.2 966.5,1812.6 700.4,1816.0 397.1,1814.8 101.4,1813.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1542.0,645.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5516156,40.967478]}},{"type":"Feature","properties":{"resourceCoords":[391.0,81.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5542251,40.968782]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p7","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"94.5,1624.9 90.0,1226.0 87.8,665.2 85.0,93.5 790.1,79.2 797.3,127.5 1484.8,162.9 1528.9,230.0 1524.5,231.8 1612.0,695.4 1612.0,697.0 1523.7,1419.7 1563.0,1798.9 99.0,1801.5 94.5,1624.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1483.0,658.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.548026,40.968161]}},{"type":"Feature","properties":{"resourceCoords":[90.0,1226.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5516156,40.967478]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p8 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.98"},{"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":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"28.9,94.1 31.8,110.3 100.8,137.6 83.0,660.5 148.9,666.9 308.1,674.0 411.2,674.0 411.2,678.6 412.3,678.7 428.4,1629.8 454.4,1771.9 564.4,1888.4 1612.0,1872.7 1612.0,1789.1 1547.8,1789.6 1543.9,1217.0 1540.7,1217.0 1543.7,659.0 1515.5,87.5 1249.0,86.0 427.6,90.2 153.8,89.8 28.9,94.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1255.0,1219.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5565138,40.9636529]}},{"type":"Feature","properties":{"resourceCoords":[149.0,659.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.559048,40.9649612]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0008__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p8 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.80"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2696.0"},{"label":"split_canvas_w","value":"1654.0"},{"label":"split_canvas_h","value":"1159.2"}],"created":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0008__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"179.3,689.8 121.2,683.0 103.3,742.0 58.6,745.9 26.9,683.7 7.1,937.8 384.2,935.0 390.2,768.1 158.3,798.8 179.3,689.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0008__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,674.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.54986913946969,40.977801252757125]}},{"type":"Feature","properties":{"resourceCoords":[413.5,674.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.54885039733632,40.97779561761432]}},{"type":"Feature","properties":{"resourceCoords":[413.5,963.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.54885562515447,40.97725679720717]}},{"type":"Feature","properties":{"resourceCoords":[0.0,963.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.54987436728784,40.977262432349974]}},{"type":"Feature","properties":{"resourceCoords":[131.8,706.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5495449,40.97774]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mount Pleasant, Iowa | 1920 | sanborn02760_005 p9","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T06:15:58Z","modified":"2026-10-19T06:15:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"129.9,1789.3 124.3,1210.0 121.1,1210.0 122.5,645.4 92.5,67.3 104.2,67.3 403.0,67.0 705.6,66.7 970.9,62.1 1542.0,65.1 1553.0,645.0 1558.5,1017.4 1583.7,1017.5 1587.4,1017.5 1529.9,1790.8 1089.6,1857.4 196.0,1873.2 195.8,1788.6 129.9,1789.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027601920:02760_1920-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1553.0,645.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.552154,40.964269]}},{"type":"Feature","properties":{"resourceCoords":[403.0,67.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.554755,40.965611]}}]}}]}