{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02743_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Mason City, Iowa | 1901 | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"28"},{"label":"placed","value":"5"},{"label":"unplaced","value":"23"},{"label":"fit sources","value":"georef 2, georef-snap 2, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 22 panels"},{"label":"unplaced pages","value":"p10__1 (tier 3, 43.15675,-93.19570 +/-1081m); p10__2 (tier 1, 43.14827,-93.19356 +/-136m); p10__3 (tier 1, 43.14635,-93.19207 +/-182m); p10__4 (tier 3, 43.15675,-93.19570 +/-1081m); p10__5 (tier 3, 43.15675,-93.19570 +/-1081m); p10__6 (tier 1, 43.14719,-93.19286 +/-113m); p11__1 (tier 1, 43.15955,-93.20545 +/-100m); p11__2 (tier 1, 43.16020,-93.20450 +/-298m); p11__3 (tier 1, 43.15767,-93.20544 +/-121m); p11__4 (tier 3, 43.15856,-93.20583 +/-406m); p1__1 (tier 1, 43.15916,-93.20887 +/-100m); p1__2 (tier 2, 43.16175,-93.20051 +/-100m); p2 (tier 1, 43.15903,-93.20269 +/-178m); p3 (tier 1, 43.15950,-93.20075 +/-174m); p4 (tier 1, 43.15878,-93.20353 +/-353m); p6__2 (tier 1, 43.15030,-93.20000 +/-100m); p7 (tier 1, 43.15346,-93.20145 +/-173m); p8__1 (tier 1, 43.15085,-93.19724 +/-324m); p8__2 (tier 1, 43.15038,-93.19927 +/-100m); p9__1 (tier 1, 43.15542,-93.19718 +/-143m); p9__2 (tier 1, 43.15533,-93.19492 +/-114m); p9__3 (tier 1, 43.15827,-93.19675 +/-100m); p9__4 (tier 1, 43.15620,-93.19781 +/-268m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mason City, Iowa | 1901 | sanborn02743_005 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T01:24:13Z","modified":"2026-09-23T01:24:13Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 -0.0,-0.0 1613.0,0.0 1613.0,1913.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.20361434158865,43.16391405012243]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.20051649238658,43.163959682601735]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.20044281793294,43.161260833392646]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.203540667135,43.16121520091334]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mason City, Iowa | 1901 | sanborn02743_005 p5","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-23T01:24:13Z","modified":"2026-09-23T01:24:13Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 -0.0,1913.0 -0.0,0.0 1613.0,-0.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[88.0,651.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.2027258,43.15722]}},{"type":"Feature","properties":{"resourceCoords":[88.0,1282.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.2043047,43.1572226]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mason City, Iowa | 1901 | sanborn02743_005 p6 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"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":"2026-09-23T01:24:13Z","modified":"2026-09-23T01:24:13Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,-0.0 -0.0,0.0 -0.0,1913.0 844.9,1913.0 847.4,1328.4 1094.3,1227.9 1132.7,1212.2 1137.4,781.8 1613.0,787.3 1613.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[805.0,1287.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.2043297,43.1499823]}},{"type":"Feature","properties":{"resourceCoords":[805.0,1881.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.2073248,43.1499986]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0006__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mason City, Iowa | 1901 | sanborn02743_005 p6 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"3379.6"},{"label":"split_canvas_y","value":"4860.0"},{"label":"split_canvas_w","value":"1378.4"},{"label":"split_canvas_h","value":"2792.0"}],"created":"2026-09-23T01:24:13Z","modified":"2026-09-23T01:24:13Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0006__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1121.6,1783.6 1128.4,1308.5 897.3,1308.1 847.4,1328.4 845.5,1779.2 1121.6,1783.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0006__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[844.9,1215.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.20240565553524,43.15252084369]}},{"type":"Feature","properties":{"resourceCoords":[1189.5,1215.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.20238862826058,43.15165328782421]}},{"type":"Feature","properties":{"resourceCoords":[1189.5,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.20477420333718,43.15162801512333]}},{"type":"Feature","properties":{"resourceCoords":[844.9,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.20479123061185,43.15249557098912]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0006__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mason City, Iowa | 1901 | sanborn02743_005 p6 [4]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"4747.2"},{"label":"split_canvas_y","value":"4851.2"},{"label":"split_canvas_w","value":"1704.8"},{"label":"split_canvas_h","value":"2800.8"}],"created":"2026-09-23T01:24:13Z","modified":"2026-09-23T01:24:13Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0006__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1298.5 1279.7,1293.4 1272.8,1775.3 1609.5,1776.7 1613.0,1298.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154mm:g027431901:02743_1901-0006__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1186.8,1212.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.20244403347957,43.15203679223999]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1212.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.20242327123607,43.150980891109]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.20478271112813,43.150955849115235]}},{"type":"Feature","properties":{"resourceCoords":[1186.8,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.20480347337163,43.152011750246224]}}]}}]}