{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03787_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Merrimac, Massachusetts | 1892 | 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"},{"label":"pages","value":"8"},{"label":"placed","value":"4"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 3, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"3 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 42.82932,-71.00827 +/-1509m); p2__2 (tier 4, 42.82932,-71.00827 +/-1509m); p4__1 (tier 4, 42.82932,-71.00827 +/-1509m); p4__2 (tier 1, 42.69925,-71.12956 +/-234m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Merrimac, Massachusetts | 1892 | sanborn03787_002 p1 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"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":"2026-09-23T03:39:40Z","modified":"2026-09-23T03:39:40Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0001__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,4020.9 2977.5,4012.0 2942.3,3937.8 2458.4,3962.4 2458.5,3571.8 -0.0,3334.1 -0.0,7652.0 6452.0,7652.0 6452.0,4020.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2976.0,4012.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0050094,42.8317037]}},{"type":"Feature","properties":{"resourceCoords":[6132.0,4012.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0041814,42.8302394]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Merrimac, Massachusetts | 1892 | sanborn03787_002 p2 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"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":"2026-09-23T03:39:40Z","modified":"2026-09-23T03:39:40Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0002__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"808.0,7652.0 1940.0,7652.0 2461.4,7652.0 2436.6,7396.0 4592.5,7233.0 4544.8,6496.4 5305.4,6487.4 6147.6,6515.6 6211.4,7652.0 6452.0,7652.0 6452.0,0.0 1751.2,0.0 1746.8,2126.8 0.0,2126.8 -0.0,7652.0 808.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5076.0,1508.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0023402,42.8351591]}},{"type":"Feature","properties":{"resourceCoords":[3324.0,1820.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0034826,42.834726]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Merrimac, Massachusetts | 1892 | sanborn03787_002 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T03:39:40Z","modified":"2026-09-23T03:39:40Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0003/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,-0.0 6452.0,7652.0 3892.4,7652.0 3874.2,7168.5 196.4,7307.8 -0.0,6883.6 1348.9,6959.6 1510.4,4201.6 1222.8,4213.4 1182.2,1787.5 356.4,1794.7 483.0,-0.0 6452.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.00064748871186,42.83299794293475]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.99920481045291,42.830125139463384]}},{"type":"Feature","properties":{"resourceCoords":[6452.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.00381813200354,42.82886150086528]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0052608102625,42.83173430433665]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0004__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Merrimac, Massachusetts | 1892 | sanborn03787_002 p4 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2126.4"},{"label":"split_canvas_w","value":"2142.4"},{"label":"split_canvas_h","value":"5525.6"}],"created":"2026-09-23T03:39:40Z","modified":"2026-09-23T03:39:40Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0004__3/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7652.0 1364.8,7652.0 1744.8,6631.6 2142.4,2126.4 0.0,2133.6 -0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764mm:g037871892:03787_1892-0004__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,2126.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02303409235685,42.822509484298656]}},{"type":"Feature","properties":{"resourceCoords":[2142.4,2126.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02163200064324,42.82219622680349]}},{"type":"Feature","properties":{"resourceCoords":[2142.4,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02273002173935,42.819537010185876]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02413211345296,42.81985026768104]}},{"type":"Feature","properties":{"resourceCoords":[811.4,4021.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.02288,42.821478]}}]}}]}