{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03557_002.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Waterville, Maine | 1889 | 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:gmd373m:g3734m:g3734wm:g3734wm_g035571889:03557_1889-0000__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Waterville, Maine | 1889 | sanborn03557_002 p0 [1]","metadata":[{"label":"streets","value":"32"},{"label":"intersections","value":"38"},{"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":"8074.1"}],"created":"2026-09-23T10:30:54Z","modified":"2026-09-23T10:30:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd373m:g3734m:g3734wm:g3734wm_g035571889:03557_1889-0000__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd373m:g3734m:g3734wm:g3734wm_g035571889:03557_1889-0000","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,1913 1613,365.1 1452.5,365.1 1451.2,0.0 0.0,0.0 -0.0,1913 1613,1913\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd373m:g3734m:g3734wm:g3734wm_g035571889:03557_1889-0000__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[543.9,904.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-69.6332802,44.5500436]}},{"type":"Feature","properties":{"resourceCoords":[678.2,1447.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-69.6351562,44.5418711]}}]}}]}