{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08421_007.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Bastrop, Texas | 1921 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"12"},{"label":"placed","value":"8"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 5, georef-snap 3"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p1k__1 (tier 1, 30.10980,-97.30734 +/-189m); p1k__2 (tier 2, 30.11276,-97.31544 +/-893m); p1k__3 (tier 2, 30.11276,-97.31544 +/-893m); p7__2 (tier 1, 30.11053,-97.31367 +/-114m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bastrop, Texas | 1921 | sanborn08421_007 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:10:11Z","modified":"2026-09-22T10:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000020","type":"ImageService3","width":1674,"height":1974},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1580.1,107.4 1571.4,1974.0 -0.0,1974.0 -0.0,129.9 1580.1,107.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000020/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.32217284638087,30.11284683311396]}},{"type":"Feature","properties":{"resourceCoords":[1674.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.31861706349233,30.11291196325229]}},{"type":"Feature","properties":{"resourceCoords":[1674.0,1974.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.31852890249476,30.10925917809081]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1974.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.3220846853833,30.109194047952478]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bastrop, Texas | 1921 | sanborn08421_007 p3","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-22T10:10:11Z","modified":"2026-09-22T10:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000030","type":"ImageService3","width":1701,"height":1975},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"115.9,114.0 1701.0,104.3 1701.0,1864.4 125.9,1872.2 115.9,114.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000030/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1278.0,1281.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.3163012,30.1105716]}},{"type":"Feature","properties":{"resourceCoords":[696.0,120.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.3175707,30.112709]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bastrop, Texas | 1921 | sanborn08421_007 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:10:11Z","modified":"2026-09-22T10:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000040","type":"ImageService3","width":1685,"height":1971},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1627.4,1272.5 1685.0,1271.8 1685.0,1859.1 275.2,1861.7 268.7,126.3 1594.5,107.0 1627.4,1272.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000040/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.31599911511883,30.11298936115661]}},{"type":"Feature","properties":{"resourceCoords":[1685.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.31238546903141,30.113008897369347]}},{"type":"Feature","properties":{"resourceCoords":[1685.0,1971.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.31235923709876,30.1093265128012]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1971.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.31597288318618,30.109306976588464]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bastrop, Texas | 1921 | sanborn08421_007 p5","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"27"}],"created":"2026-09-22T10:10:11Z","modified":"2026-09-22T10:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000050","type":"ImageService3","width":1687,"height":1961},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1685.2,159.0 1687.0,1824.2 235.8,1836.8 236.5,1961.0 -0.0,1961.0 -0.0,192.8 1685.2,159.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000050/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1030.0,422.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.3188972,30.1178251]}},{"type":"Feature","properties":{"resourceCoords":[1610.0,1824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.3163581,30.1127282]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000060__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bastrop, Texas | 1921 | sanborn08421_007 p6 [1]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"20"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2741.6"},{"label":"split_canvas_w","value":"6704.0"},{"label":"split_canvas_h","value":"5082.4"}],"created":"2026-09-22T10:10:11Z","modified":"2026-09-22T10:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000060__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000060","type":"ImageService3","width":1676,"height":1956},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1676.0,1807.1 1676.0,685.4 187.8,685.6 209.2,1849.3 1676.0,1807.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000060__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[423.0,1549.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.3151153,30.1138347]}},{"type":"Feature","properties":{"resourceCoords":[423.0,707.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.3151026,30.1169363]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000060__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bastrop, Texas | 1921 | sanborn08421_007 p6 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6704.0"},{"label":"split_canvas_h","value":"2742.4"}],"created":"2026-09-22T10:10:11Z","modified":"2026-09-22T10:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000060__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000060","type":"ImageService3","width":1676,"height":1956},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1676.0,0.0 -0.0,-0.0 -0.0,685.6 1676.0,685.4 1676.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000060__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[746.0,63.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.3202333,30.1210178]}},{"type":"Feature","properties":{"resourceCoords":[163.0,63.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.322739,30.120942]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000070__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bastrop, Texas | 1921 | sanborn08421_007 p7 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6736.0"},{"label":"split_canvas_h","value":"7852.0"}],"created":"2026-09-22T10:10:11Z","modified":"2026-09-22T10:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000070__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000070","type":"ImageService3","width":1684,"height":1963},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"173.8,1963.0 827.8,1963.0 826.8,1253.8 1684.0,1253.6 1684.0,0.0 737.8,0.0 97.0,87.0 0.3,951.9 10.1,1200.5 173.8,1963.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000070__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[97.0,1235.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.312504,30.108466]}},{"type":"Feature","properties":{"resourceCoords":[97.0,87.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.312578,30.112808]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000080/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bastrop, Texas | 1921 | sanborn08421_007 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:10:11Z","modified":"2026-09-22T10:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000080/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000080","type":"ImageService3","width":1688,"height":1970},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1970.0 -0.0,155.4 138.3,154.1 138.4,148.1 137.4,99.6 1506.0,95.5 1530.0,383.6 1688.0,387.4 1688.0,1970.0 -0.0,1970.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08421007:sb000080/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.3193414046123,30.109819100558305]}},{"type":"Feature","properties":{"resourceCoords":[1688.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.31217752942021,30.109892091077153]}},{"type":"Feature","properties":{"resourceCoords":[1688.0,1970.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.31207975132891,30.10260824978542]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1970.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.319243626521,30.10253525926657]}}]}}]}