{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01721_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Ava, Illinois | 1902 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"7"},{"label":"placed","value":"2"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef-snap 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p2__1 (tier 1, 37.88752,-89.49322 +/-100m); p2__2 (tier 1, 37.88643,-89.49489 +/-100m); p2__3 (tier 1, 37.91344,-89.23954 +/-100m); p2__4 (tier 1, 37.88987,-89.50342 +/-100m); p2__5 (tier 1, 37.88863,-89.49733 +/-109m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104am:g017211902:01721_1902-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ava, Illinois | 1902 | sanborn01721_001 p1","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.74"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T07:28:50Z","modified":"2026-10-18T07:28:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104am:g017211902:01721_1902-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104am:g017211902:01721_1902-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"21.8,186.4 59.2,68.2 1306.2,18.3 1572.3,106.2 1574.5,1835.1 1170.2,1885.0 94.2,1868.0 21.8,186.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104am:g017211902:01721_1902-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[967.0,1590.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.49486545627666,37.88731757105985]}},{"type":"Feature","properties":{"resourceCoords":[1474.0,1067.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.49360893849668,37.88824004616063]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104am:g017211902:01721_1902-0002__6/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ava, Illinois | 1902 | sanborn01721_001 p2 [6]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.49"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2738.8"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4913.2"}],"created":"2026-10-18T07:28:50Z","modified":"2026-10-18T07:28:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104am:g017211902:01721_1902-0002__6/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104am:g017211902:01721_1902-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1563.0,1881.0 1542.2,1196.3 992.5,1187.3 876.7,1017.1 719.2,975.8 619.7,1019.6 531.9,785.0 245.7,716.4 118.6,867.4 35.4,1125.0 70.9,1859.5 1563.0,1881.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104am:g017211902:01721_1902-0002__6/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[331.0,1617.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.50107642600013,37.88839076769428]}},{"type":"Feature","properties":{"resourceCoords":[1585.0,1617.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4980736949647,37.88836833815171]}}]}}]}