{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08442_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Brenham, Texas | 1906 | 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:g4034bm_g084421906:08442_1906-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brenham, Texas | 1906 | sanborn08442_005 p1 [1]","metadata":[{"label":"streets","value":"26"},{"label":"intersections","value":"44"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6878.4"},{"label":"split_canvas_h","value":"5709.9"}],"created":"2026-09-23T23:36:08Z","modified":"2026-09-23T23:36:08Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g4034bm_g084421906:08442_1906-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g4034bm_g084421906:08442_1906-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,0.0 -0.0,0.0 0.0,1427.4 870.6,1427.5 872.1,1051.0 877.4,862.8 1204.1,863.9 1206.0,443.7 1613,446.1 1613,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g4034bm_g084421906:08442_1906-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[497.8,701.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.3977874,30.1624564]}},{"type":"Feature","properties":{"resourceCoords":[724.1,175.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.3962112,30.1710592]}}]}}]}