{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03599_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Ellicott City, Maryland | 1899 | mapsnap generated fit (2026-10-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-20"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"12"},{"label":"placed","value":"3"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef 3"},{"label":"key map","value":"none"},{"label":"split sheets","value":"3 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 39.34012,-76.95402 +/-144m); p1__2 (tier 4, 39.26805,-76.79884 +/-244m); p1__3 (tier 4, 39.26805,-76.79884 +/-244m); p2__1 (tier 1, 39.26980,-76.79745 +/-100m); p5__1 (tier 1, 39.26806,-76.80027 +/-173m); p5__2 (tier 1, 39.26807,-76.80059 +/-100m); p5__3 (tier 1, 39.26740,-76.79563 +/-100m); p5__4 (tier 1, 39.26708,-76.80203 +/-100m); p5__5 (tier 1, 39.27169,-76.79534 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844em:g3844em_g035991899:03599_1899-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ellicott City, Maryland | 1899 | sanborn03599_003 p2 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.02"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-20T00:11:14Z","modified":"2026-10-20T00:11:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844em:g3844em_g035991899:03599_1899-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844em:g3844em_g035991899:03599_1899-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1468.9,1552.2 1493.5,764.2 1478.0,762.0 1491.8,621.8 1230.7,63.4 1084.7,154.1 805.4,155.4 628.6,52.8 442.6,112.4 464.1,200.9 234.8,301.7 91.7,538.4 212.8,898.6 434.1,917.7 785.1,1226.0 790.0,1226.0 790.0,1230.2 793.3,1233.2 867.0,1730.9 1251.3,1789.7 1468.9,1552.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844em:g3844em_g035991899:03599_1899-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1267.0,762.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8003634,39.2684166]}},{"type":"Feature","properties":{"resourceCoords":[1478.0,762.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.8000092,39.2682216]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844em:g3844em_g035991899:03599_1899-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ellicott City, Maryland | 1899 | sanborn03599_003 p3","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.11"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T00:11:14Z","modified":"2026-10-20T00:11:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844em:g3844em_g035991899:03599_1899-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844em:g3844em_g035991899:03599_1899-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"265.3,960.4 248.4,954.4 296.9,799.9 134.7,110.8 388.2,18.4 915.6,84.8 1309.5,40.0 1501.5,142.6 1525.2,242.8 1612.0,338.2 1607.8,591.6 1612.0,883.0 1555.5,918.5 1611.9,1508.8 1521.0,1834.8 1062.1,1876.2 378.9,1793.0 195.9,1883.5 90.8,1812.8 52.2,1840.5 265.3,960.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844em:g3844em_g035991899:03599_1899-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1008.0,1093.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.7988604,39.2676229]}},{"type":"Feature","properties":{"resourceCoords":[281.0,966.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.799964,39.2681886]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844em:g3844em_g035991899:03599_1899-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ellicott City, Maryland | 1899 | sanborn03599_003 p4","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.37"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T00:11:14Z","modified":"2026-10-20T00:11:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844em:g3844em_g035991899:03599_1899-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844em:g3844em_g035991899:03599_1899-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"66.2,793.7 77.5,1684.7 742.9,1752.5 996.9,1874.6 1559.5,1864.3 1568.4,438.9 1503.6,130.6 1198.5,51.6 791.7,222.9 320.9,182.6 314.6,167.1 270.8,255.1 276.2,378.0 118.4,561.1 1.0,709.7 1.0,784.9 66.2,793.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844em:g3844em_g035991899:03599_1899-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[826.0,1055.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.7959778,39.2675243]}},{"type":"Feature","properties":{"resourceCoords":[1194.0,1021.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.7953311,39.2677213]}}]}}]}