{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02598_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Centerville, Iowa | 1888 | 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":"5"},{"label":"placed","value":"2"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef-snap 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 3 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 40.78298,-92.74162 +/-238m); p1__2 (tier 4, 40.73425,-92.87425 +/-146m); p1__3 (tier 4, 40.73425,-92.87425 +/-146m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025981888:02598_1888-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Centerville, Iowa | 1888 | sanborn02598_002 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.83"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:32:53Z","modified":"2026-10-18T17:32:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025981888:02598_1888-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025981888:02598_1888-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"118.8,1872.9 159.3,1856.2 1556.4,1844.1 1567.3,1273.9 1492.3,767.3 1550.2,639.4 1567.0,247.5 1489.5,125.8 1219.1,45.6 756.0,21.1 127.7,59.2 125.2,627.6 1.0,624.8 1.0,682.0 139.9,683.4 124.4,1201.2 220.5,1201.7 219.6,1270.1 118.1,1271.4 118.8,1872.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025981888:02598_1888-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[490.0,941.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.87420417675355,40.73353183433008]}},{"type":"Feature","properties":{"resourceCoords":[1393.0,941.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.87418917096741,40.731822868227525]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025981888:02598_1888-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Centerville, Iowa | 1888 | sanborn02598_002 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:32:53Z","modified":"2026-10-18T17:32:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025981888:02598_1888-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025981888:02598_1888-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1424.2,1907.1 1345.4,1857.7 75.2,1844.7 21.4,1274.2 49.2,96.7 241.4,24.0 1497.5,51.4 1503.9,50.9 1509.0,619.9 1383.6,618.7 1384.3,676.0 1524.5,675.5 1515.8,1194.0 1612.0,1193.2 1612.0,1205.5 1612.0,1261.7 1510.4,1264.3 1519.2,1866.4 1424.2,1907.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154cm:g025981888:02598_1888-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[616.0,933.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.87419406527954,40.73591821170584]}},{"type":"Feature","properties":{"resourceCoords":[1147.0,933.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.87420288117889,40.73491438303349]}}]}}]}