{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn02559_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Algona, Iowa | 1900 | 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":"6"},{"label":"placed","value":"6"},{"label":"unplaced","value":"0"},{"label":"fit sources","value":"georef 6"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 4 panels"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algona, Iowa | 1900 | sanborn02559_004 p1 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"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":"2026-09-22T08:57:32Z","modified":"2026-09-22T08:57:32Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1313.0,1913.0 1309.5,1556.3 1613.0,1552.8 1613.0,0.0 -0.0,-0.0 -0.0,1913.0 1313.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[759.0,1569.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.216748,43.075676]}},{"type":"Feature","properties":{"resourceCoords":[285.0,1569.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.2179716,43.0756587]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algona, Iowa | 1900 | sanborn02559_004 p1 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"5238.0"},{"label":"split_canvas_y","value":"6211.2"},{"label":"split_canvas_w","value":"1214.0"},{"label":"split_canvas_h","value":"1440.8"}],"created":"2026-09-22T08:57:32Z","modified":"2026-09-22T08:57:32Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 1613.0,1552.8 1309.5,1556.3 1313.0,1913.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1309.5,1552.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.23316292295827,43.073644417460095]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1552.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.23237064575642,43.073649344277285]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.23236262019867,43.07296348404973]}},{"type":"Feature","properties":{"resourceCoords":[1309.5,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.23315489740052,43.07295855723254]}},{"type":"Feature","properties":{"resourceCoords":[1363.4,1619.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.2330207,43.073518]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algona, Iowa | 1900 | sanborn02559_004 p2 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5489.6"},{"label":"split_canvas_w","value":"2314.0"},{"label":"split_canvas_h","value":"2162.4"}],"created":"2026-09-22T08:57:32Z","modified":"2026-09-22T08:57:32Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"551.5,1913.0 552.5,1402.4 469.6,1399.7 470.1,1372.7 0.0,1372.4 -0.0,1913.0 551.5,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[552.5,1402.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.2404292,43.0698247]}},{"type":"Feature","properties":{"resourceCoords":[552.5,1866.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.240395,43.06886]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algona, Iowa | 1900 | sanborn02559_004 p2 [2]","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"25"},{"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":"2026-09-22T08:57:32Z","modified":"2026-09-22T08:57:32Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,899.0 0.0,1372.4 578.5,1372.8 575.4,1913.0 1512.6,1913.0 1529.9,0.0 -0.0,-0.0 -0.0,333.3 91.3,334.5 100.9,897.1 -0.0,899.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1047.0,849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.237944,43.068865]}},{"type":"Feature","properties":{"resourceCoords":[92.0,1384.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.2404091,43.0678424]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algona, Iowa | 1900 | sanborn02559_004 p3","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"16"}],"created":"2026-09-22T08:57:32Z","modified":"2026-09-22T08:57:32Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,0.0 1613.0,1913.0 105.4,1909.5 114.8,348.8 111.9,18.8 1613.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1051.0,861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.234243,43.068867]}},{"type":"Feature","properties":{"resourceCoords":[110.0,861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.23671,43.068865]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Algona, Iowa | 1900 | sanborn02559_004 p4","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"6"}],"created":"2026-09-22T08:57:32Z","modified":"2026-09-22T08:57:32Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025591900:02559_1900-0004","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:g4154am:g025591900:02559_1900-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[229.0,728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.23055,43.071869]}},{"type":"Feature","properties":{"resourceCoords":[1377.0,116.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.225353,43.07355]}}]}}]}