{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08420_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Bartlett, Texas | 1912 | key map | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08420003:sb00001k/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bartlett, Texas | 1912 | sanborn08420_003 p1k","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"32"}],"created":"2026-09-23T04:34:58Z","modified":"2026-09-23T04:34:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08420003:sb00001k/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08420003:sb00001k","type":"ImageService3","width":1658,"height":1947},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1947.0 -0.0,0.0 1658.0,0.0 1658.0,1947.0 -0.0,1947.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08420003:sb00001k/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1050.3,333.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.4299948,30.7959229]}},{"type":"Feature","properties":{"resourceCoords":[1219.4,259.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.4239827,30.7964727]}}]}}]}