{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01921_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Herrin, Illinois | 1905 | 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":"14"},{"label":"placed","value":"1"},{"label":"unplaced","value":"13"},{"label":"fit sources","value":"georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"3 sheet(s) cut into 13 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 37.80274,-89.02757 +/-100m); p1__2 (tier 4, 37.80274,-89.02757 +/-100m); p1__3 (tier 4, 37.80274,-89.02757 +/-100m); p1__4 (tier 4, 37.80274,-89.02757 +/-100m); p1__5 (tier 4, 37.80274,-89.02757 +/-100m); p1__6 (tier 4, 37.80274,-89.02757 +/-100m); p1__7 (tier 4, 37.80274,-89.02757 +/-100m); p3__1 (tier 1, 37.80606,-89.02746 +/-253m); p3__2 (tier 1, 37.80267,-89.03635 +/-100m); p4__1 (tier 4, 37.80274,-89.02757 +/-100m); p4__2 (tier 4, 37.80274,-89.02757 +/-100m); p4__3 (tier 4, 37.80274,-89.02757 +/-100m); p4__4 (tier 4, 37.80274,-89.02757 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019211905:01921_1905-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Herrin, Illinois | 1905 | sanborn01921_002 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:33:09Z","modified":"2026-10-22T13:33:09Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019211905:01921_1905-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019211905:01921_1905-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"28.1,377.1 73.3,59.7 1560.0,59.3 1609.8,1810.0 1544.9,1877.6 57.6,1848.5 28.1,377.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104hm:g019211905:01921_1905-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[794.0,1322.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.02761685602566,37.8020716599663]}},{"type":"Feature","properties":{"resourceCoords":[794.0,1860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.02764184403615,37.80108558879475]}}]}}]}