{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02842_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Sumner, Iowa | 1900 | 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":"8"},{"label":"placed","value":"4"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"3 sheet(s) cut into 8 panels"},{"label":"unplaced pages","value":"p1__1 (tier 2, 42.84706,-92.09659 +/-100m); p1__2 (tier 2, 42.84706,-92.09659 +/-100m); p3__1 (tier 2, 42.84806,-92.10026 +/-112m); p3__4 (tier 1, 42.84731,-92.10079 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_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":"Sumner, Iowa | 1900 | sanborn02842_002 p2 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"21"},{"label":"confidence","value":"0.89"},{"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":"2026-10-19T18:21:57Z","modified":"2026-10-19T18:21:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"131.3,1869.2 1565.0,1864.5 1564.8,937.0 1488.6,826.2 1318.7,825.5 1318.4,825.5 1317.5,825.5 1317.5,825.5 1308.6,805.5 1294.7,424.8 1211.5,182.5 1038.5,44.1 512.4,9.6 124.2,23.3 125.4,483.3 131.3,1869.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[618.0,951.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.09902,42.8474562]}},{"type":"Feature","properties":{"resourceCoords":[618.0,1881.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.101492,42.8474566]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_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":"Sumner, Iowa | 1900 | sanborn02842_002 p2 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.74"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"5270.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1182.0"},{"label":"split_canvas_h","value":"3302.0"}],"created":"2026-10-19T18:21:57Z","modified":"2026-10-19T18:21:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1346.7,125.8 1361.1,739.8 1558.2,796.1 1579.0,132.8 1490.5,91.9 1346.7,125.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1317.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.09520836329669,42.84720104765397]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.09520795014586,42.84776749342342]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,825.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.09305536083082,42.84776664681526]}},{"type":"Feature","properties":{"resourceCoords":[1317.5,825.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.09305577398165,42.84720020104581]}},{"type":"Feature","properties":{"resourceCoords":[1458.2,755.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.093238,42.8474701]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sumner, Iowa | 1900 | sanborn02842_002 p3 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.91"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1676.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4776.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T18:21:57Z","modified":"2026-10-19T18:21:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"427.5,1442.3 427.5,1533.3 427.5,1826.7 667.8,1890.3 821.9,1890.4 1527.4,1883.0 1511.3,469.5 1506.7,1.0 1489.6,1.0 490.8,43.3 486.5,1377.9 427.5,1381.4 427.5,1442.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1021.0,1418.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1002389,42.849366]}},{"type":"Feature","properties":{"resourceCoords":[511.0,472.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.097764,42.850327]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0003__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sumner, Iowa | 1900 | sanborn02842_002 p3 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.55"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2724.0"},{"label":"split_canvas_w","value":"1710.0"},{"label":"split_canvas_h","value":"2628.0"}],"created":"2026-10-19T18:21:57Z","modified":"2026-10-19T18:21:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0003__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"263.6,689.0 19.2,709.1 15.8,1305.4 403.9,1307.5 418.8,1214.2 426.5,1216.4 426.5,782.6 414.1,783.2 263.6,689.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028421900:02842_1900-0003__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[121.8,1292.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.10145,42.851186]}},{"type":"Feature","properties":{"resourceCoords":[121.8,812.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1002225,42.851191]}}]}}]}