{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02722_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Logan, Iowa | 1930 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"10"},{"label":"placed","value":"8"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 6, georef-snap 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"4 sheet(s) cut into 8 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 41.63977,-95.78786 +/-182m); p2__2 (tier 1, 41.64174,-95.78502 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Logan, Iowa | 1930 | sanborn02722_006 p1 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2829.2"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4822.8"}],"created":"2026-09-22T17:53:46Z","modified":"2026-09-22T17:53:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 1613.0,766.0 58.8,748.1 61.5,1303.9 60.9,1437.5 -0.0,1437.0 -0.0,1913.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[59.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.789178,41.639922]}},{"type":"Feature","properties":{"resourceCoords":[591.0,755.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.787837,41.641993]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Logan, Iowa | 1930 | sanborn02722_006 p2 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"},{"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":"2026-09-22T17:53:46Z","modified":"2026-09-22T17:53:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1249.5 1613.0,1207.1 1288.4,1206.5 1297.2,651.1 1613.0,651.0 1613.0,111.4 73.0,107.0 63.5,1807.5 1613.0,1820.3 1613.0,1249.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1147.0,1247.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.7865037,41.64303]}},{"type":"Feature","properties":{"resourceCoords":[73.0,107.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.789138,41.645133]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Logan, Iowa | 1930 | sanborn02722_006 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T17:53:46Z","modified":"2026-09-22T17:53:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1.4,689.5 36.0,689.4 -0.0,-0.0 1613.0,0.0 1595.2,1785.7 1.9,1791.8 1.4,689.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.78909702744554,41.648523756602515]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.78504074990767,41.648492832092714]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.78508948702599,41.64487263808724]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.78914576456386,41.644903562597044]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Logan, Iowa | 1930 | sanborn02722_006 p4 [1]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"14"},{"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":"2026-09-22T17:53:46Z","modified":"2026-09-22T17:53:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1554.0,1788.0 1560.5,177.9 1219.8,177.9 1220.0,347.0 581.0,340.3 581.2,0.0 -0.0,-0.0 9.4,1785.8 1554.0,1788.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[540.0,1251.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.791781,41.645142]}},{"type":"Feature","properties":{"resourceCoords":[1555.0,1251.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.789138,41.645133]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Logan, Iowa | 1930 | sanborn02722_006 p4 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"2324.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2556.0"},{"label":"split_canvas_h","value":"1388.0"}],"created":"2026-09-22T17:53:46Z","modified":"2026-09-22T17:53:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"581.2,0.0 581.0,318.5 1220.0,319.1 1219.5,0.0 581.2,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[909.5,319.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.789868,41.647221]}},{"type":"Feature","properties":{"resourceCoords":[1188.0,319.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.789111,41.647219]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Logan, Iowa | 1930 | sanborn02722_006 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T17:53:46Z","modified":"2026-09-22T17:53:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 -0.0,131.8 1590.3,128.2 1594.7,1913.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.79314386864482,41.644356378047355]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.78908719178945,41.64433128005195]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.78912674374988,41.64071049585997]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.79318342060525,41.640735593855375]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Logan, Iowa | 1930 | sanborn02722_006 p6 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3476.4"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T17:53:46Z","modified":"2026-09-22T17:53:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 -0.0,1913.0 738.5,1913.0 701.2,0.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[724.1,1182.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.793169,41.644107]}},{"type":"Feature","properties":{"resourceCoords":[724.1,613.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.793147,41.645161]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0006__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Logan, Iowa | 1930 | sanborn02722_006 p6 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"3435.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3016.4"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T17:53:46Z","modified":"2026-09-22T17:53:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0006__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1134.2,1875.8 1173.7,1876.7 1175.6,1913.0 1613.0,1913.0 1613.0,0.0 1132.4,0.0 1139.4,172.2 1052.8,176.4 1134.2,1875.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027221930:02722_1930-0006__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1169.5,740.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.785129,41.644064]}},{"type":"Feature","properties":{"resourceCoords":[1551.1,165.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.784112,41.645088]}}]}}]}