{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04401_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Tower, Minnesota | 1888 | mapsnap generated fit (2026-10-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-20"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"8"},{"label":"placed","value":"4"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 2, snap:1 1, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 47.48382,-92.46958 +/-179m); p4__1 (tier 4, 47.80608,-92.27409 +/-376m); p4__2 (tier 4, 47.80608,-92.27409 +/-376m); p4__3 (tier 4, 47.80608,-92.27409 +/-376m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Tower, Minnesota | 1888 | sanborn04401_001 p1 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.62"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1880.4"},{"label":"split_canvas_w","value":"3388.0"},{"label":"split_canvas_h","value":"5771.6"}],"created":"2026-10-20T00:42:36Z","modified":"2026-10-20T00:42:36Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"579.0,1775.8 578.7,1749.3 711.5,1869.0 771.2,1846.8 741.3,1752.8 790.6,1650.7 813.6,511.6 57.2,505.7 20.8,1100.9 12.6,1101.4 14.9,1168.1 112.2,1163.7 579.0,1775.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,470.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.2801722894062,47.8052719116926]}},{"type":"Feature","properties":{"resourceCoords":[847.0,470.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.2801456623726,47.80685810521051]}},{"type":"Feature","properties":{"resourceCoords":[847.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.27615041781917,47.80682742195544]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.27617704485274,47.80524122843754]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Tower, Minnesota | 1888 | sanborn04401_001 p1 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3329.2"},{"label":"split_canvas_y","value":"2689.2"},{"label":"split_canvas_w","value":"3122.8"},{"label":"split_canvas_h","value":"4962.8"}],"created":"2026-10-20T00:42:36Z","modified":"2026-10-20T00:42:36Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1345.3,1766.7 1612.0,1782.5 1612.0,1724.5 1612.0,1718.5 1599.0,1718.0 1566.5,734.7 1325.4,680.4 900.2,732.0 895.6,1591.8 847.7,1724.3 1076.4,1808.2 1078.7,1753.3 1345.3,1766.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1107.2,1071.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.26870328195608,47.807359869869664]}},{"type":"Feature","properties":{"resourceCoords":[1599.0,1071.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.26863840883311,47.80643396955596]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Tower, Minnesota | 1888 | sanborn04401_001 p2","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T00:42:36Z","modified":"2026-10-20T00:42:36Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1579.0,1228.0 1526.5,1871.7 90.2,1869.8 34.0,1534.1 78.6,1403.2 54.0,755.2 121.0,754.0 118.4,655.4 741.8,194.0 715.1,193.8 837.9,61.6 852.4,103.1 1417.1,106.7 1452.8,191.8 1496.9,191.6 1500.1,467.9 1498.2,754.6 1505.1,1033.4 1510.0,1227.3 1579.1,1227.0 1579.0,1228.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[808.0,754.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.2763466,47.8052931]}},{"type":"Feature","properties":{"resourceCoords":[121.0,754.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.2782392,47.805285]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Tower, Minnesota | 1888 | sanborn04401_001 p3","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T00:42:36Z","modified":"2026-10-20T00:42:36Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"128.9,1912.0 125.0,1718.8 119.8,1441.1 123.2,1155.6 121.5,880.5 77.6,880.4 42.5,795.5 61.0,795.7 47.0,134.8 98.7,62.8 1275.3,33.2 1537.1,117.5 1460.2,352.3 1515.9,352.7 1511.8,623.5 1505.2,896.5 1570.1,894.1 1565.8,1866.3 200.6,1879.2 197.7,1912.0 128.9,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g044011888:04401_1888-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[823.0,348.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.2725356,47.8073466]}},{"type":"Feature","properties":{"resourceCoords":[823.0,1446.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.2724996,47.8053066]}}]}}]}