{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02867_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"West Liberty, Iowa | 1886 | mapsnap generated fit (2026-10-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-22"},{"label":"run","value":"corpus-v2.1"},{"label":"pages","value":"1"},{"label":"placed","value":"1"},{"label":"unplaced","value":"0"},{"label":"fit sources","value":"georef-snap 1"},{"label":"key map","value":"none"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671886:02867_1886-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"West Liberty, Iowa | 1886 | sanborn02867_001 p1","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:58:22Z","modified":"2026-10-22T13:58:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671886:02867_1886-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671886:02867_1886-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"73.3,1460.8 88.3,1480.3 128.5,1809.1 736.6,1798.3 911.7,1867.6 1339.5,1896.2 1577.5,1841.2 1609.8,399.4 1531.5,67.6 1067.1,17.9 763.9,74.0 516.5,13.3 119.1,63.8 72.5,311.1 55.9,329.6 24.8,308.6 1.0,1835.2 1.0,1905.7 35.4,1912.0 36.2,1912.0 40.2,1483.0 73.3,1460.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671886:02867_1886-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[823.0,778.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.26340890203865,41.571098929866864]}},{"type":"Feature","properties":{"resourceCoords":[1408.0,177.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.26192579508235,41.57219893270921]}}]}}]}