{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02561_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Allison, Iowa | 1915 | mapsnap generated fit (2026-10-17)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-17"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"5"},{"label":"placed","value":"2"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 42.75249,-92.79563 +/-118m); p1__3 (tier 1, 42.75559,-92.79664 +/-100m); p1__4 (tier 4, 42.75249,-92.79563 +/-118m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025611915:02561_1915-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Allison, Iowa | 1915 | sanborn02561_001 p1 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"19"},{"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":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-17T22:31:40Z","modified":"2026-10-17T22:31:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025611915:02561_1915-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025611915:02561_1915-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"475.0,1837.6 475.0,1853.5 614.0,1855.4 614.0,1868.0 748.1,1857.2 1108.8,1862.2 1108.8,1828.2 1600.7,1785.3 1612.0,1784.2 1612.0,1735.4 1612.0,1684.5 1587.8,51.3 700.9,44.1 652.3,342.8 652.3,347.0 651.6,347.0 650.9,351.7 461.0,384.1 461.0,390.8 461.0,397.5 382.4,397.5 64.3,451.8 100.1,566.2 643.4,622.0 652.3,622.0 652.3,622.9 658.0,623.5 658.0,1324.5 652.3,1325.2 652.3,1329.0 623.5,1329.2 577.4,1335.5 507.8,1481.8 514.9,1832.3 475.0,1837.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025611915:02561_1915-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[616.0,368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.796391,42.754644]}},{"type":"Feature","properties":{"resourceCoords":[614.0,1868.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.796396,42.751815]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025611915:02561_1915-0001__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Allison, Iowa | 1915 | sanborn02561_001 p1 [5]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.35"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2488.0"},{"label":"split_canvas_w","value":"2609.2"},{"label":"split_canvas_h","value":"5164.0"}],"created":"2026-10-17T22:31:40Z","modified":"2026-10-17T22:31:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025611915:02561_1915-0001__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025611915:02561_1915-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"53.9,1791.8 57.2,1860.1 402.7,1874.6 448.4,1329.7 600.3,1241.3 634.6,746.0 295.1,659.8 95.8,646.1 96.0,659.0 97.8,1155.6 131.8,1158.6 96.5,1519.8 96.0,1655.0 83.4,1653.9 69.9,1793.1 53.9,1791.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025611915:02561_1915-0001__5/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[96.0,1655.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.796396,42.751815]}},{"type":"Feature","properties":{"resourceCoords":[96.0,659.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.7938617,42.751971]}}]}}]}