{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn04054_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Ironwood, Michigan | 1921 | mapsnap generated fit (2026-09-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-20"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"40"},{"label":"placed","value":"21"},{"label":"unplaced","value":"19"},{"label":"fit sources","value":"georef 18, georef-snap 3"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"9 sheet(s) cut into 24 panels"},{"label":"unplaced pages","value":"p0 (tier 1, 46.44588,-90.16947 +/-265m); p1 (tier 1, 46.44678,-90.16607 +/-262m); p11__2 (tier 4, 46.45388,-90.15999 +/-2365m); p11__3 (tier 4, 46.45388,-90.15999 +/-2365m); p11__4 (tier 4, 46.45388,-90.15999 +/-2365m); p17__1 (tier 4, 46.45388,-90.15999 +/-2365m); p17__2 (tier 4, 46.45388,-90.15999 +/-2365m); p18__2 (tier 1, 46.45975,-90.15946 +/-101m); p20 (tier 2, 46.45677,-90.13458 +/-100m); p21__1 (tier 2, 46.45593,-90.12646 +/-100m); p21__2 (tier 2, 46.45593,-90.12646 +/-100m); p22__1 (tier 4, 46.45388,-90.15999 +/-2365m); p22__4 (tier 4, 46.45388,-90.15999 +/-2365m); p23__2 (tier 1, 46.45883,-90.17046 +/-100m); p3__2 (tier 4, 46.45388,-90.15999 +/-2365m); p3__3 (tier 4, 46.45388,-90.15999 +/-2365m); p3__4 (tier 4, 46.45388,-90.15999 +/-2365m); p4 (tier 1, 46.45203,-90.17324 +/-259m); p8__2 (tier 4, 46.45388,-90.15999 +/-2365m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0010__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p10 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0010__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0010","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1014.7 -0.0,1927.0 799.9,1927.0 797.4,1185.3 1628.0,1181.4 1628.0,853.5 1553.2,853.3 1554.0,100.0 353.1,100.0 96.0,162.6 91.8,177.3 94.2,1014.0 -0.0,1014.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0010__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[617.0,100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1634845,46.4555143]}},{"type":"Feature","properties":{"resourceCoords":[1554.0,100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1609232,46.4555272]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0010__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p10 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"3189.6"},{"label":"split_canvas_y","value":"4725.6"},{"label":"split_canvas_w","value":"3322.4"},{"label":"split_canvas_h","value":"2982.4"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0010__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0010","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"839.3,1927.0 1628.0,1927.0 1628.0,1263.0 838.5,1268.2 839.3,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0010__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[838.4,1635.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1609172,46.454683]}},{"type":"Feature","properties":{"resourceCoords":[838.4,1207.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1609232,46.4555272]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0011__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p11 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"3617.6"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0011__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0011","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1055.9,848.1 1590.7,227.5 1628.0,164.4 1628.0,123.7 1548.4,92.1 351.0,89.0 350.2,147.9 -0.0,146.3 0.0,899.6 654.9,901.5 1119.5,903.0 1055.9,848.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0011__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1032.0,89.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1665321,46.4530956]}},{"type":"Feature","properties":{"resourceCoords":[351.0,89.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.167916,46.4522606]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p12","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0012","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1497.1,-0.0 1503.8,1509.7 1007.0,1617.9 1002.6,1927.0 -0.0,1927.0 -0.0,0.0 1497.1,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1007.0,863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1697234,46.4479686]}},{"type":"Feature","properties":{"resourceCoords":[1007.0,1618.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1717255,46.4479686]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p13","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0013","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,1796.7 -0.0,1803.6 -0.0,380.0 153.7,379.0 151.7,123.8 944.2,132.1 943.3,-0.0 1628.0,-0.0 1628.0,1796.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[157.0,795.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1647044,46.4488535]}},{"type":"Feature","properties":{"resourceCoords":[1598.0,795.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1647101,46.4461628]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p14","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0014","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,1927.0 238.9,1927.0 252.3,1143.4 -0.0,1143.8 0.0,0.0 1628.0,0.0 1628.0,301.4 1605.8,347.5 1628.0,320.0 1628.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1120.0,1610.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1605047,46.447989]}},{"type":"Feature","properties":{"resourceCoords":[249.0,1610.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1628896,46.4479805]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p15","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"1"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0015","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"165.2,334.3 187.4,287.5 186.2,0.0 1202.5,0.0 1259.2,337.0 1230.8,609.3 1322.1,896.1 1628.0,910.1 1628.0,1927.0 194.3,1927.0 187.6,306.4 165.2,334.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0015/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.15963981286487,46.451000887123016]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.15523844740564,46.45100383911021]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.15523338096725,46.447410867691055]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.15963474642648,46.44740791570386]}},{"type":"Feature","properties":{"resourceCoords":[532.0,1152.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1581985,46.4488539]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0016","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"121.5,1927.0 285.6,1414.8 -0.0,1313.3 -0.0,1010.9 109.1,763.1 164.6,470.9 141.2,423.4 -0.0,378.2 0.0,-0.0 1628.0,0.0 1628.0,1927.0 121.5,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.15715154116724,46.451681673949984]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.15293988704884,46.45262104395093]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.15133737327461,46.44916211022094]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.15554902739301,46.44822274022]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0018__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p18 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0018__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0018","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,1927.0 1628.0,1616.0 1605.5,1615.0 1619.5,610.3 891.2,610.8 891.0,0.0 0.0,-0.0 -0.0,1927.0 1628.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0018__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[970.0,1100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1348264,46.4556126]}},{"type":"Feature","properties":{"resourceCoords":[1606.0,1615.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1329841,46.4546719]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p19","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0019","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,574.1 129.7,569.1 123.5,406.4 111.7,406.3 108.0,0.0 1628.0,0.0 1628.0,1927.0 -0.0,1927.0 -0.0,574.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1127.0,662.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1275447,46.453748]}},{"type":"Feature","properties":{"resourceCoords":[447.0,157.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1311979,46.4555987]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p2","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1076.0,0.0 893.9,218.1 1588.5,805.2 1415.5,1008.4 1424.3,1927.0 -0.0,1927.0 0.0,0.0 1076.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[733.0,1550.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1731596,46.4545231]}},{"type":"Feature","properties":{"resourceCoords":[1589.0,805.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1726946,46.4565799]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0022__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p22 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"3234.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3277.6"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0022__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0022","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1125.0,0.0 1115.2,594.2 808.6,594.8 816.3,1299.7 1146.9,1298.1 1143.0,1676.7 1140.9,1927.0 1628.0,1927.0 1628.0,590.7 1575.2,591.0 1572.2,0.0 1125.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0022__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1353.2,1832.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1453531,46.4580341]}},{"type":"Feature","properties":{"resourceCoords":[1353.2,392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1453724,46.4632315]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0022__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p22 [3]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2379.2"},{"label":"split_canvas_w","value":"4587.6"},{"label":"split_canvas_h","value":"5328.8"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0022__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0022","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"797.6,594.8 0.0,596.4 -0.0,1927.0 856.4,1927.0 862.2,1670.5 1143.0,1676.7 1146.9,1298.1 816.3,1299.7 808.6,594.8 797.6,594.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0022__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[410.0,742.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1420793,46.466862]}},{"type":"Feature","properties":{"resourceCoords":[410.0,1729.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1420397,46.4632509]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0023__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p23 [1]","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"29"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0023__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0023","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"478.3,1426.1 474.9,1558.3 764.7,1909.7 743.3,1927.0 920.1,1927.0 1099.7,1778.7 1017.7,1682.7 1611.4,1178.6 1628.0,1198.2 1628.0,0.0 0.0,-0.0 -0.0,1299.4 29.7,1275.4 27.4,1416.3 478.3,1426.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0023__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[61.0,241.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1750597,46.4609351]}},{"type":"Feature","properties":{"resourceCoords":[55.0,932.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1750184,46.4583773]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p24","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"17"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0024","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1927.0 -0.0,981.5 51.7,981.6 54.0,826.5 303.4,772.4 300.8,14.7 564.9,12.7 565.0,-0.0 1628.0,-0.0 1628.0,1927.0 -0.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[549.0,448.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1697229,46.446166]}},{"type":"Feature","properties":{"resourceCoords":[1044.0,448.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1697203,46.4443619]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p3 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 0.0,1055.8 427.4,1398.4 677.1,1624.9 707.8,1652.9 1169.6,1666.3 1179.9,1927.0 1628.0,1927.0 1628.0,0.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[746.0,1501.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1762892,46.4498415]}},{"type":"Feature","properties":{"resourceCoords":[1064.0,586.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1772818,46.4514467]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p5","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"17"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0005","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1927.0 -0.0,52.2 785.1,63.3 1054.5,287.6 1516.3,289.4 1515.0,1865.0 835.8,1868.3 835.2,1927.0 -0.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[163.0,815.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1711594,46.4529243]}},{"type":"Feature","properties":{"resourceCoords":[1515.0,1865.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1665321,46.4530956]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p6","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0006","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"689.4,1927.0 566.5,1859.9 43.5,1854.2 59.8,0.0 1628.0,0.0 1628.0,356.1 1285.2,789.6 1415.2,806.0 1625.0,981.7 797.6,1927.0 689.4,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[740.0,791.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1670176,46.4554081]}},{"type":"Feature","properties":{"resourceCoords":[1313.0,1332.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1649186,46.4553614]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0007","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"136.5,941.1 95.8,962.7 -0.0,853.2 -0.0,0.0 1605.7,0.0 1609.0,1863.6 536.5,1927.0 541.6,1476.8 310.4,1476.5 160.6,1554.0 136.5,941.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.16639439030351,46.45895665080514]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.16203760617879,46.45898088835269]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.16199625306055,46.455403211750614]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.16635303718527,46.455378974203065]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p8 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0008","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"494.3,1865.2 494.0,1927.0 1628.0,1927.0 1628.0,1371.5 1554.8,1370.8 1560.6,0.0 1269.7,0.0 1260.2,484.7 846.5,479.9 846.5,0.0 79.3,0.0 76.0,1861.0 494.3,1865.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[76.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1620486,46.4555207]}},{"type":"Feature","properties":{"resourceCoords":[1330.0,255.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1587247,46.4585271]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ironwood, Michigan | 1921 | sanborn04054_005 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T22:22:41Z","modified":"2026-09-20T22:22:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0009","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"73.5,1886.7 -0.0,1886.3 -0.0,-0.0 1628.0,0.0 1628.0,1927.0 73.6,1927.0 73.5,1886.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114im:g040541921:04054_1921-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.15812241116859,46.459967028651285]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.1537615663567,46.45998923759247]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.15372367368418,46.456408290724276]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.15808451849607,46.456386081783094]}}]}}]}