{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03684_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Ayer, Massachusetts | 1912 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"15"},{"label":"placed","value":"8"},{"label":"unplaced","value":"7"},{"label":"fit sources","value":"georef 4, georef-snap 4"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 42.56262,-71.59445 +/-187m); p1__2 (tier 1, 42.56302,-71.59099 +/-120m); p1__3 (tier 1, 42.56378,-71.59238 +/-100m); p1__4 (tier 1, 42.56320,-71.59236 +/-118m); p1__5 (tier 1, 42.56380,-71.59239 +/-100m); p7__1 (tier 1, 42.56013,-71.59410 +/-105m); p7__4 (tier 1, 42.55831,-71.58114 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ayer, Massachusetts | 1912 | sanborn03684_005 p2","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T00:35:18Z","modified":"2026-10-19T00:35:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1549.0,210.8 1543.3,340.6 1542.0,680.0 1534.4,868.5 1537.1,1007.0 1545.1,1830.2 1218.8,1838.3 959.5,1848.1 963.0,1855.3 731.1,1885.2 731.1,1880.8 223.3,1879.0 103.6,1829.0 60.9,1712.0 26.7,593.1 131.8,133.3 796.7,30.9 1463.7,83.8 1550.5,26.4 1549.0,210.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1542.0,680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5864652,42.5629979]}},{"type":"Feature","properties":{"resourceCoords":[900.0,891.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.588153,42.5630385]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ayer, Massachusetts | 1912 | sanborn03684_005 p3 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.93"},{"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":"2026-10-19T00:35:18Z","modified":"2026-10-19T00:35:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"137.5,1859.8 778.1,1855.0 798.0,1850.0 1486.8,1858.7 1521.7,1858.8 1592.8,1835.5 1508.7,1531.1 1509.8,1327.4 1579.6,1222.8 1548.4,851.5 1466.7,718.2 620.4,733.9 540.0,521.9 691.0,363.1 656.9,149.2 502.6,51.4 166.2,30.2 121.5,60.5 122.2,244.4 118.0,374.0 120.8,712.5 115.5,900.7 119.8,1038.8 137.5,1859.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[798.0,1850.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5858881,42.5605929]}},{"type":"Feature","properties":{"resourceCoords":[118.0,374.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5861713,42.5635838]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ayer, Massachusetts | 1912 | sanborn03684_005 p3 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.62"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3078.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3373.2"},{"label":"split_canvas_h","value":"2864.0"}],"created":"2026-10-19T00:35:18Z","modified":"2026-10-19T00:35:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"881.2,668.2 1612.0,590.6 1612.0,551.9 1580.1,549.9 1559.0,548.6 1498.5,266.6 1543.5,146.6 1592.4,119.8 884.3,97.0 881.6,602.0 881.2,668.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[881.6,509.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.586231,42.559899]}},{"type":"Feature","properties":{"resourceCoords":[881.6,602.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.586307,42.559742]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ayer, Massachusetts | 1912 | sanborn03684_005 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.65"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T00:35:18Z","modified":"2026-10-19T00:35:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"956.7,1791.9 954.3,1796.5 247.6,1694.1 34.8,1418.8 40.4,1415.3 37.5,427.1 110.0,277.4 73.8,96.0 1194.4,22.9 1516.2,80.7 1570.6,308.3 1518.5,905.4 1579.1,977.6 1571.5,1825.8 956.7,1791.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[886.0,512.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.59270437259858,42.55957548639991]}},{"type":"Feature","properties":{"resourceCoords":[1301.0,512.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.59279363546,42.56032913531029]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ayer, Massachusetts | 1912 | sanborn03684_005 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T00:35:18Z","modified":"2026-10-19T00:35:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"256.8,1690.7 157.9,856.0 152.8,854.8 26.3,251.5 31.4,250.2 72.2,21.6 308.4,32.8 306.1,24.9 565.9,61.0 892.0,110.3 1530.6,226.3 1551.4,225.1 1465.8,714.7 1448.8,811.2 1408.8,1038.7 1441.8,1036.8 1471.7,1032.0 1559.7,1220.6 1580.2,1225.3 1504.5,1640.8 1450.7,1891.7 1412.5,1882.5 1066.1,1825.0 1082.5,1771.1 626.8,1715.7 609.1,1749.1 256.8,1690.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1454.0,700.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5863294110157,42.55977210181326]}},{"type":"Feature","properties":{"resourceCoords":[816.0,501.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.58779716224905,42.56033107069761]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ayer, Massachusetts | 1912 | sanborn03684_005 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T00:35:18Z","modified":"2026-10-19T00:35:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"282.2,337.6 284.3,349.4 288.1,387.5 536.0,356.3 941.8,292.3 939.6,271.9 1084.4,130.4 1070.5,104.5 1058.1,74.9 1279.9,38.5 1311.5,33.3 1502.6,711.3 1539.2,705.4 1591.3,1184.2 1522.0,1487.7 1539.0,1841.9 1430.2,1795.5 1273.0,1870.0 973.3,1810.6 971.9,1840.3 712.8,1836.5 711.4,1912.0 690.4,1912.0 692.0,1879.2 324.4,1887.2 66.5,1825.3 129.3,1318.8 22.4,1039.9 89.5,555.8 52.9,465.8 282.2,337.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[362.0,1050.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.58529045687588,42.55714964891776]}},{"type":"Feature","properties":{"resourceCoords":[732.0,1050.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.58483029747478,42.55775344850146]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0007__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ayer, Massachusetts | 1912 | sanborn03684_005 p7 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.70"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2480.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3972.0"},{"label":"split_canvas_h","value":"2709.2"}],"created":"2026-10-19T00:35:18Z","modified":"2026-10-19T00:35:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0007__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"705.0,40.7 652.8,344.7 682.8,345.3 685.5,606.8 761.8,606.4 762.4,627.5 1552.5,644.5 1597.5,236.5 1310.0,52.1 721.1,72.7 705.0,40.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0007__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1084.0,349.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.581918,42.557034]}},{"type":"Feature","properties":{"resourceCoords":[1398.0,349.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5812387,42.556736]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0007__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ayer, Massachusetts | 1912 | sanborn03684_005 p7 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.67"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2679.6"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4972.4"}],"created":"2026-10-19T00:35:18Z","modified":"2026-10-19T00:35:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0007__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1435.0,824.7 1100.7,906.7 1094.5,849.8 646.6,980.6 643.4,1019.0 290.9,1105.5 227.1,994.8 141.0,1338.0 428.3,1440.2 523.0,1612.1 513.7,1735.1 646.0,1909.3 1550.4,1874.7 1579.9,1576.5 1496.7,1271.2 1567.2,1063.1 1585.1,1054.4 1435.0,824.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036841912:03684_1912-0007__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1474.0,795.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.586850185404,42.55767721178349]}},{"type":"Feature","properties":{"resourceCoords":[1110.0,872.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.58769340584044,42.55791932085717]}}]}}]}