{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02003_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Mason City, Illinois | 1887 | 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":"10"},{"label":"placed","value":"4"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p1a__2 (tier 4, 40.20212,-89.69708 +/-155m); p1a__3 (tier 4, 40.20212,-89.69708 +/-155m); p1b__2 (tier 4, 40.20212,-89.69708 +/-155m); p1b__3 (tier 4, 40.20212,-89.69708 +/-155m); p2a__1 (tier 4, 40.20212,-89.69708 +/-155m); p2b__1 (tier 4, 40.20212,-89.69708 +/-155m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0001__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, Illinois | 1887 | sanborn02003_001 p1a [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.77"},{"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":"2026-10-19T01:32:20Z","modified":"2026-10-19T01:32:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"81.3,1362.0 58.5,1822.5 98.0,1885.2 866.4,1887.2 943.5,1511.2 1190.2,1492.4 1501.1,1561.4 1545.4,1489.4 1596.0,301.1 1540.2,119.2 1439.5,59.9 1243.2,101.0 1106.3,34.1 896.0,38.9 764.4,131.5 496.2,128.3 330.6,32.0 84.0,43.5 78.6,39.0 48.1,178.1 69.3,178.3 75.3,766.5 70.8,766.5 72.8,1362.0 81.3,1362.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[345.0,766.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6963901,40.2023764]}},{"type":"Feature","properties":{"resourceCoords":[939.0,174.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6949604,40.2034913]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0001__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, Illinois | 1887 | sanborn02003_001 p1b [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.77"},{"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":"2026-10-19T01:32:20Z","modified":"2026-10-19T01:32:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1341.6,0.0 0.0,0.0 0.0,1913.0 942.8,1913.0 945.4,1528.3 1313.1,1530.7 1312.9,1577.0 1613.0,1577.0 1613.0,0.0 1341.6,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[345.0,766.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6963901,40.2023764]}},{"type":"Feature","properties":{"resourceCoords":[939.0,174.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6949604,40.2034913]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mason City, Illinois | 1887 | sanborn02003_001 p2a [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"16"},{"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":"2026-10-19T01:32:20Z","modified":"2026-10-19T01:32:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"338.1,1661.0 342.0,1661.0 342.0,1672.6 412.1,1879.0 942.9,1886.2 1187.7,1825.0 1502.8,1865.2 1541.7,1912.0 1564.3,1470.4 1555.9,1470.4 1554.8,881.1 1559.3,881.2 1554.2,299.0 1533.2,298.9 1563.6,161.3 1412.8,34.5 63.9,52.0 56.5,1651.8 336.2,1655.6 338.1,1661.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1242.0,883.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6978281,40.2023578]}},{"type":"Feature","properties":{"resourceCoords":[81.0,295.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.700706,40.2034338]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mason City, Illinois | 1887 | sanborn02003_001 p2b [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"16"},{"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":"2026-10-19T01:32:20Z","modified":"2026-10-19T01:32:20Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,0.0 0.0,0.0 0.0,1661.0 342.0,1661.0 342.0,1913.0 1613.0,1913.0 1613.0,1479.5 1613.0,253.1 1613.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020031887:02003_1887-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1242.0,883.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6978281,40.2023578]}},{"type":"Feature","properties":{"resourceCoords":[81.0,295.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.700706,40.2034338]}}]}}]}