{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00799_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Sacramento, California | 1952 | mapsnap generated fit (2026-10-17)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-17"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"145"},{"label":"placed","value":"70"},{"label":"unplaced","value":"75"},{"label":"fit sources","value":"georef-snap 44, georef 15, snap:0 6, snap:2 2, streets-candidate 1, snap:1 1, georef:contradicted 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"25 sheet(s) cut into 81 panels"},{"label":"unplaced pages","value":"p10 (tier 2, 38.59104,-121.47742 +/-100m); p12 (tier 1, 38.58269,-121.47942 +/-281m); p14__1 (tier 3, 38.59670,-121.48632 +/-481m); p14__2 (tier 1, 38.59619,-121.49308 +/-210m); p15__1 (tier 1, 38.58573,-121.49713 +/-125m); p15__2 (tier 1, 38.58634,-121.49617 +/-219m); p15__3 (tier 1, 38.59322,-121.50530 +/-100m); p16 (tier 1, 38.58365,-121.49497 +/-277m); p17 (tier 2, 38.58213,-121.49305 +/-100m); p19 (tier 2, 38.58012,-121.48542 +/-128m); p1__1 (tier 1, 38.58614,-121.48437 +/-116m); p1__2 (tier 2, 38.56932,-121.48493 +/-100m); p2 (tier 1, 38.58500,-121.47866 +/-268m); p22 (tier 2, 38.57937,-121.47816 +/-194m); p23__1 (tier 1, 38.58320,-121.50180 +/-135m); p23__2 (tier 1, 38.58317,-121.50194 +/-130m); p23__3 (tier 1, 38.58329,-121.50200 +/-142m); p23__4 (tier 1, 38.58311,-121.50171 +/-138m); p24__2 (tier 1, 38.58286,-121.50056 +/-132m); p24__3 (tier 1, 38.57648,-121.48668 +/-141m); p25__2 (tier 1, 38.58327,-121.49745 +/-131m); p25__4 (tier 1, 38.58275,-121.50039 +/-135m); p26__1 (tier 1, 38.58146,-121.49524 +/-132m); p26__3 (tier 1, 38.58166,-121.49665 +/-140m); p27__2 (tier 1, 38.58109,-121.49392 +/-130m); p27__4 (tier 1, 38.58201,-121.49351 +/-137m); p28__1 (tier 2, 38.57939,-121.48905 +/-232m); p28__2 (tier 1, 38.57994,-121.48973 +/-133m); p28__3 (tier 2, 38.57939,-121.48905 +/-232m); p29__3 (tier 1, 38.57873,-121.48582 +/-142m); p29__4 (tier 1, 38.57942,-121.48838 +/-136m); p3 (tier 1, 38.58360,-121.50309 +/-284m); p30__1 (tier 1, 38.56711,-121.50590 +/-133m); p30__2 (tier 1, 38.56880,-121.49618 +/-134m); p30__3 (tier 1, 38.56550,-121.50066 +/-141m); p31 (tier 1, 38.57702,-121.48147 +/-275m); p33__1 (tier 1, 38.57998,-121.50334 +/-133m); p33__2 (tier 1, 38.57995,-121.50328 +/-128m); p33__4 (tier 1, 38.57969,-121.50342 +/-145m); p34__1 (tier 2, 38.58018,-121.50170 +/-225m); p34__2 (tier 1, 38.57950,-121.50192 +/-131m); p35__1 (tier 1, 38.58015,-121.49716 +/-134m); p35__2 (tier 1, 38.57920,-121.50055 +/-127m); p37__1 (tier 1, 38.57831,-121.49624 +/-100m); p37__2 (tier 1, 38.57832,-121.49622 +/-100m); p38__1 (tier 2, 38.57841,-121.49203 +/-188m); p38__3 (tier 1, 38.57705,-121.49112 +/-202m); p39__1 (tier 1, 38.57565,-121.48695 +/-130m); p39__2 (tier 1, 38.57561,-121.48697 +/-123m); p4 (tier 2, 38.57523,-121.49089 +/-513m); p40__1 (tier 1, 38.57889,-121.48566 +/-131m); p40__2 (tier 1, 38.56897,-121.48989 +/-133m); p45 (tier 1, 38.57340,-121.50250 +/-276m); p48 (tier 1, 38.57392,-121.49310 +/-275m); p5 (tier 1, 38.58334,-121.50041 +/-267m); p59 (tier 1, 38.56946,-121.49209 +/-275m); p6 (tier 1, 38.58939,-121.50407 +/-136m); p63__1 (tier 1, 38.57135,-121.51126 +/-105m); p63__2 (tier 1, 38.57105,-121.51181 +/-134m); p63__3 (tier 2, 38.56830,-121.50568 +/-373m); p64 (tier 1, 38.57136,-121.50621 +/-273m); p65 (tier 1, 38.57188,-121.50685 +/-137m); p67__1 (tier 1, 38.56896,-121.50042 +/-164m); p68 (tier 1, 38.57197,-121.49704 +/-276m); p7 (tier 1, 38.58377,-121.49523 +/-276m); p71 (tier 1, 38.56870,-121.48942 +/-277m); p75 (tier 1, 38.56770,-121.51533 +/-136m); p76 (tier 1, 38.56773,-121.51538 +/-257m); p77 (tier 1, 38.56533,-121.50971 +/-272m); p85 (tier 1, 38.57306,-121.48781 +/-267m); p86 (tier 2, 38.59304,-121.47851 +/-100m); p87__1 (tier 1, 38.59231,-121.48260 +/-274m); p87__2 (tier 2, 38.57581,-121.49092 +/-100m); p89__1 (tier 3, 38.59037,-121.48594 +/-481m); p9 (tier 1, 38.58621,-121.48815 +/-275m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.57"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0011","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"455.4,1266.7 290.7,1270.5 272.4,1267.5 276.7,1265.6 230.9,1120.7 234.3,495.2 183.4,422.5 92.5,454.4 79.6,454.5 73.1,93.8 607.4,42.1 699.9,60.0 701.9,94.5 811.8,61.0 884.8,95.7 1015.8,79.9 1051.5,238.5 1021.6,369.9 1049.3,1170.6 991.2,1236.2 749.5,1240.6 706.5,1263.2 455.4,1266.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48268626851497,38.58612878876742]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.47891439326025,38.585086294084725]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48053748672639,38.58144707954265]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4843093619811,38.58248957422534]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0013","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"626.4,1256.2 256.4,1257.2 222.6,1169.2 232.8,295.8 189.1,166.4 84.2,196.9 82.6,132.8 274.3,63.1 980.1,78.1 1013.9,459.4 1046.9,498.0 1041.7,867.6 1001.5,1030.3 1046.8,1208.8 976.4,1237.6 983.0,1257.0 626.4,1256.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0013/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.47871106856948,38.58505776989245]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.47489144570213,38.58404190492814]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.47647304949746,38.58035655451759]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48029267236481,38.5813724194819]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0018","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"498.1,1244.5 961.0,1246.0 960.9,1161.5 951.2,1133.1 982.1,609.0 958.8,218.0 1005.8,196.2 832.2,1.0 795.5,1.0 800.8,32.4 723.4,53.8 160.5,40.9 159.1,30.4 118.0,30.4 118.5,234.5 112.7,436.5 110.4,840.9 66.9,840.9 74.7,858.0 84.4,1208.8 145.8,1242.7 498.1,1237.5 498.1,1244.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[104.0,1030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.49145079306211,38.5816338094466]}},{"type":"Feature","properties":{"resourceCoords":[493.0,1030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.49010461634731,38.58127556233954]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.51"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0020","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"277.0,1246.7 170.1,1246.2 141.4,1246.1 140.9,1210.7 141.1,1100.2 116.5,1099.9 124.3,1019.4 151.4,262.5 149.1,233.2 148.9,30.4 174.4,30.6 175.5,50.0 497.3,51.6 550.2,29.3 568.3,32.5 732.2,30.9 982.2,30.9 909.4,67.8 914.0,1173.1 864.3,1219.7 544.0,1222.5 542.4,1247.0 328.6,1246.8 277.0,1246.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0020/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4851310094337,38.58305467231611]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48132274832241,38.58204828147479]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48288956245528,38.57837380109709]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48669782356657,38.579380191938405]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.67"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0021","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"275.8,1232.9 229.2,1113.1 228.2,976.8 244.2,61.3 237.2,43.7 608.7,38.7 966.9,35.6 1005.4,145.7 1052.0,725.7 1020.2,1182.8 990.2,1225.6 978.6,1252.0 542.0,1257.7 243.1,1260.5 275.8,1232.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0021/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48004997236586,38.581752177910275]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.47626122955153,38.58070827437701]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.47788643029462,38.577052591621495]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48167517310895,38.57809649515476]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0024__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p24 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.68"},{"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":"2223.6"},{"label":"split_canvas_h","value":"2548.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0024__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0024","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"479.1,334.5 476.7,76.2 274.6,122.0 180.0,83.4 20.2,107.5 51.9,446.2 479.8,424.3 479.4,375.1 479.1,334.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0024__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50109494840343,38.583968793733206]}},{"type":"Feature","properties":{"resourceCoords":[555.9,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49921093624707,38.58346399170214]}},{"type":"Feature","properties":{"resourceCoords":[555.9,637.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49994559312137,38.58176477202304]}},{"type":"Feature","properties":{"resourceCoords":[0.0,637.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50182960527775,38.58226957405411]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0024__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p24 [4]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2188.8"},{"label":"split_canvas_y","value":"2548.0"},{"label":"split_canvas_w","value":"2243.2"},{"label":"split_canvas_h","value":"2884.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0024__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0024","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"586.9,1054.2 601.4,1213.2 1022.7,1210.7 1022.6,1147.5 1022.8,1104.2 1022.5,1065.5 1022.4,1032.9 586.9,1054.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0024__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[547.2,637.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50109680476456,38.583860808578905]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,637.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49922739128057,38.583363988386]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50003848391007,38.58147260764714]}},{"type":"Feature","properties":{"resourceCoords":[547.2,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50190789739406,38.58196942784005]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0025__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p25 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"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":"2377.6"},{"label":"split_canvas_h","value":"2683.2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0025__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0025","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"133.4,571.7 176.2,571.8 243.8,571.1 485.5,568.5 522.0,568.1 524.1,608.8 524.6,620.7 532.1,642.0 553.5,653.5 563.0,362.0 526.4,303.1 552.5,144.5 142.7,100.8 122.4,105.7 128.9,367.0 129.1,375.7 129.9,408.1 131.8,490.2 132.0,498.8 132.8,528.7 133.4,571.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0025__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49984835555722,38.58372454542238]}},{"type":"Feature","properties":{"resourceCoords":[594.4,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49787072694242,38.58316703521573]}},{"type":"Feature","properties":{"resourceCoords":[594.4,670.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49867071593701,38.581408359778735]}},{"type":"Feature","properties":{"resourceCoords":[0.0,670.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.5006483445518,38.58196586998538]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0025__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p25 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.80"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2664.0"},{"label":"split_canvas_w","value":"2398.8"},{"label":"split_canvas_h","value":"2768.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0025__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0025","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"135.4,1175.1 135.6,1238.0 502.4,1235.0 532.3,1251.8 525.1,1230.4 523.4,1177.8 135.4,1175.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0025__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,666.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49996046976266,38.58356441101856]}},{"type":"Feature","properties":{"resourceCoords":[599.7,666.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49795066946643,38.58302665793745]}},{"type":"Feature","properties":{"resourceCoords":[599.7,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49873850010438,38.581201869017086]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.5007483004006,38.58173962209819]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0026__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p26 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.71"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2206.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2226.0"},{"label":"split_canvas_h","value":"2608.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0026__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0026","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"604.3,134.3 622.9,133.6 622.5,111.0 604.3,134.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0026__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[551.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49525082612567,38.58360667733774]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49340774175894,38.583110312003285]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49414579048086,38.58141188679407]}},{"type":"Feature","properties":{"resourceCoords":[551.5,652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49598887484758,38.58190825212853]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0026__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p26 [4]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.60"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2206.0"},{"label":"split_canvas_y","value":"2608.0"},{"label":"split_canvas_w","value":"2226.0"},{"label":"split_canvas_h","value":"2824.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0026__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0026","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"856.5,719.7 798.1,741.6 662.9,726.3 654.9,703.2 619.6,732.8 620.0,755.4 601.5,756.1 579.5,967.0 608.8,1171.5 621.6,1171.7 621.5,1199.0 643.9,1244.5 781.6,1191.7 960.5,1228.1 972.7,1357.0 1008.7,1357.0 1011.1,1357.0 1011.5,1203.7 1011.7,1170.4 1009.4,753.5 976.9,753.6 944.2,754.0 864.0,754.9 856.5,719.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0026__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[551.5,652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49527496017804,38.58352658615353]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.493427849626,38.58302502633461]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4942353884879,38.581181916542064]}},{"type":"Feature","properties":{"resourceCoords":[551.5,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49608249903993,38.581683476360986]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0027__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p27 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.74"},{"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":"2360.0"},{"label":"split_canvas_h","value":"2614.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0027__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0027","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"123.8,175.6 124.4,326.5 86.5,326.8 117.0,628.3 185.3,589.0 559.6,630.4 564.0,137.1 123.7,142.8 123.8,175.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0027__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49458661419301,38.58225157906636]}},{"type":"Feature","properties":{"resourceCoords":[590.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49260549116254,38.581701401386965]}},{"type":"Feature","properties":{"resourceCoords":[590.0,653.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49338016187738,38.57997258548465]}},{"type":"Feature","properties":{"resourceCoords":[0.0,653.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49536128490786,38.58052276316404]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0027__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p27 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2614.0"},{"label":"split_canvas_w","value":"2360.0"},{"label":"split_canvas_h","value":"2818.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0027__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0027","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"128.6,1169.2 568.5,1166.8 571.9,964.6 535.6,756.8 126.5,759.1 128.6,1169.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0027__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,653.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49417488065464,38.58324481303493]}},{"type":"Feature","properties":{"resourceCoords":[590.0,653.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49218691408898,38.58270594656052]}},{"type":"Feature","properties":{"resourceCoords":[590.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.493004826324,38.58083587706233]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49499279288966,38.581374743536735]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0028__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p28 [4]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.29"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2018.0"},{"label":"split_canvas_y","value":"2542.0"},{"label":"split_canvas_w","value":"2414.0"},{"label":"split_canvas_h","value":"2890.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0028__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0028","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1107.0,752.1 1107.0,693.9 1053.3,696.9 1034.8,642.8 1034.9,730.7 550.6,731.5 557.0,1199.6 1010.1,1210.0 1030.1,1141.2 1061.3,1139.7 1086.6,1204.5 1105.8,1047.4 1068.0,998.1 1043.0,984.6 1040.6,888.1 1106.0,865.6 1107.0,752.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0028__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[504.5,635.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49038274740526,38.580981392267596]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,635.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4883903647652,38.58044241579329]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48920987641138,38.57856487169685]}},{"type":"Feature","properties":{"resourceCoords":[504.5,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49120225905145,38.57910384817115]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0029__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p29 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.27"},{"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":"2326.0"},{"label":"split_canvas_h","value":"2611.2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0029__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0029","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"511.8,612.0 541.7,616.7 509.1,450.2 510.4,346.6 514.5,346.6 525.0,143.8 308.1,146.4 295.6,146.5 416.1,555.0 511.0,554.7 511.8,612.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0029__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48630675837653,38.58005727644006]}},{"type":"Feature","properties":{"resourceCoords":[581.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48434514685516,38.57951712816462]}},{"type":"Feature","properties":{"resourceCoords":[581.5,652.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.485114954864,38.57778442580957]}},{"type":"Feature","properties":{"resourceCoords":[0.0,652.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48707656638537,38.57832457408501]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0029__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p29 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.52"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2326.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2106.0"},{"label":"split_canvas_h","value":"2602.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0029__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0029","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1047.2,550.9 952.4,551.1 833.0,142.2 793.1,142.5 755.2,142.7 684.8,143.1 666.2,143.2 655.8,143.3 654.8,107.4 653.9,1.0 628.5,1.0 619.7,101.8 581.5,132.8 581.5,144.3 611.4,180.9 620.5,325.1 581.5,487.6 581.5,513.7 663.0,610.0 818.1,571.2 1047.8,608.2 1047.2,550.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0029__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[581.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4861657194356,38.580003612399196]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48438647205934,38.579517438585086]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,650.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48514815379107,38.577789772368746]}},{"type":"Feature","properties":{"resourceCoords":[581.5,650.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48692740116734,38.578275946182856]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0030__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p30 [4]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.50"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2142.0"},{"label":"split_canvas_y","value":"2584.4"},{"label":"split_canvas_w","value":"2290.0"},{"label":"split_canvas_h","value":"2847.6"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0030__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0030","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"602.9,1150.0 994.6,1156.0 996.5,1068.3 606.1,975.0 602.9,1150.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0030__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[535.5,646.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49753263742761,38.568155658984594]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,646.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49559236447064,38.56766343341047]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49636912792316,38.56576502799206]}},{"type":"Feature","properties":{"resourceCoords":[535.5,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49830940088013,38.56625725356618]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p32","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.76"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0032","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"139.3,639.3 137.1,498.6 138.4,436.5 123.4,436.2 135.0,248.8 153.4,234.0 455.1,238.1 895.8,242.4 908.0,216.1 965.2,315.8 996.2,551.6 1043.4,541.3 1047.2,615.3 1047.0,926.5 966.2,957.7 923.9,1060.7 655.2,1060.2 253.2,1055.2 127.3,1051.5 139.3,639.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0032/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4809920467463,38.578892662808656]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.47720856599959,38.577926598456735]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.47871250383632,38.57427580117458]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48249598458303,38.5752418655265]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0033__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p33 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.69"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2558.0"},{"label":"split_canvas_w","value":"2294.0"},{"label":"split_canvas_h","value":"2874.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0033__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0033","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"355.3,642.5 353.9,642.5 311.4,642.1 310.6,642.1 309.9,741.6 182.2,741.2 129.4,1157.1 306.9,1157.6 306.5,1301.0 383.4,1301.1 386.9,1221.2 548.1,1227.8 527.3,832.5 569.9,685.6 556.0,659.8 433.4,721.6 378.1,709.8 355.3,642.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0033__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,639.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50619045996993,38.58277232801964]}},{"type":"Feature","properties":{"resourceCoords":[573.5,639.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50426074062774,38.582258498874374]}},{"type":"Feature","properties":{"resourceCoords":[573.5,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50507830947554,38.58035557004609]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50700802881772,38.58086939919135]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0034__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p34 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.80"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2579.2"},{"label":"split_canvas_w","value":"2205.6"},{"label":"split_canvas_h","value":"2852.8"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0034__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0034","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"42.6,1129.7 92.7,1128.5 94.6,1181.0 479.1,1168.8 468.4,722.6 503.7,722.2 546.0,721.8 546.0,721.7 516.6,712.4 195.3,740.1 95.7,701.5 32.9,940.2 42.6,1129.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0034__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[93.1,1164.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.50424714162168,38.57944054557832]}},{"type":"Feature","properties":{"resourceCoords":[476.4,1164.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.502930819957,38.579061841969484]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0034__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p34 [4]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.88"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2181.2"},{"label":"split_canvas_y","value":"2560.4"},{"label":"split_canvas_w","value":"2250.8"},{"label":"split_canvas_h","value":"2871.6"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0034__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0034","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"624.2,1159.0 1012.0,1159.0 1013.9,711.8 977.7,728.4 806.6,742.5 702.5,709.1 657.7,708.8 622.1,708.5 624.2,1159.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0034__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[624.2,1159.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.5029274,38.5790467]}},{"type":"Feature","properties":{"resourceCoords":[1012.0,1159.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.5015961,38.5786861]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0035__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p35 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.53"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2545.6"},{"label":"split_canvas_w","value":"4432.0"},{"label":"split_canvas_h","value":"2886.4"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0035__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0035","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"161.5,1228.6 325.2,1229.5 333.8,1229.5 445.7,1357.0 740.6,1357.0 866.8,1226.9 935.6,1226.0 935.5,1146.2 927.3,669.4 892.1,712.1 163.3,713.4 115.0,752.9 116.5,1228.4 161.5,1228.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0035__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[126.0,1159.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.50148650747846,38.57885201267577]}},{"type":"Feature","properties":{"resourceCoords":[513.0,1159.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.50024114261133,38.57850649542021]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p36 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.10"},{"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":"2170.4"},{"label":"split_canvas_h","value":"2526.4"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"187.4,64.1 78.7,80.1 59.5,169.3 75.2,555.0 283.3,593.6 296.0,629.1 346.5,629.5 379.2,629.9 401.3,122.0 181.4,126.1 187.4,64.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49527477269393,38.57903526837963]}},{"type":"Feature","properties":{"resourceCoords":[542.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49560091048366,38.57831939779813]}},{"type":"Feature","properties":{"resourceCoords":[542.6,631.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49665926084083,38.57861823913866]}},{"type":"Feature","properties":{"resourceCoords":[0.0,631.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49633312305109,38.57933410972016]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p36 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.11"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2131.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2300.8"},{"label":"split_canvas_h","value":"2546.4"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"766.9,407.9 776.2,404.9 810.6,383.7 823.4,359.2 823.9,328.4 818.0,309.9 802.7,294.3 775.2,272.4 701.5,234.7 682.9,240.6 632.8,277.0 617.1,292.2 610.7,304.5 619.5,332.3 634.8,347.9 766.9,407.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[532.8,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4978054395272,38.57920200585111]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4968396040703,38.57895972162184]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,636.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49717994939677,38.5781188254076]}},{"type":"Feature","properties":{"resourceCoords":[532.8,636.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49814578485366,38.578361109636866]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p36 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.74"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2507.6"},{"label":"split_canvas_w","value":"2131.2"},{"label":"split_canvas_h","value":"2924.4"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"58.3,1225.8 456.2,1213.2 453.2,724.9 452.8,666.2 375.8,702.7 311.4,666.2 92.2,657.0 54.1,703.1 58.7,1150.9 58.3,1225.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,626.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49844079854003,38.579623271001545]}},{"type":"Feature","properties":{"resourceCoords":[532.8,626.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49663510616834,38.579133066082655]}},{"type":"Feature","properties":{"resourceCoords":[532.8,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49749608506475,38.57719398189157]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49930177743644,38.57768418681046]}},{"type":"Feature","properties":{"resourceCoords":[455.8,1154.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4976066,38.577599]}},{"type":"Feature","properties":{"resourceCoords":[455.8,1154.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.497517,38.5778052]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p36 [4]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.82"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2085.6"},{"label":"split_canvas_y","value":"2526.4"},{"label":"split_canvas_w","value":"2346.4"},{"label":"split_canvas_h","value":"2905.6"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"606.2,742.7 605.2,1237.8 993.2,1239.0 993.2,744.3 993.2,743.7 741.2,727.5 742.2,685.9 696.2,701.5 626.1,674.4 606.3,683.2 606.2,718.8 606.2,742.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0036__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[605.4,1160.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.497517,38.5778052]}},{"type":"Feature","properties":{"resourceCoords":[993.1,1160.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4961993,38.577457]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0037__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p37 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.51"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2556.4"},{"label":"split_canvas_w","value":"2310.8"},{"label":"split_canvas_h","value":"2875.6"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0037__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0037","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"560.4,979.1 534.1,991.4 483.6,736.0 576.7,725.8 576.7,699.0 322.6,675.0 307.2,687.6 190.4,699.5 133.3,657.0 91.7,681.8 81.4,639.8 79.9,639.8 68.0,639.7 50.4,639.5 62.9,749.6 117.8,1242.5 149.1,1220.3 226.4,1211.7 241.6,1239.6 289.6,1270.2 335.4,1269.2 383.8,1233.9 399.6,1196.2 504.3,1185.5 513.1,1259.7 561.4,1203.3 538.9,1049.7 565.2,1034.7 560.4,979.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0037__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[109.0,1164.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4961993,38.577457]}},{"type":"Feature","properties":{"resourceCoords":[501.8,1164.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4949254,38.5769919]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0037__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p37 [4]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.46"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2288.4"},{"label":"split_canvas_y","value":"2575.6"},{"label":"split_canvas_w","value":"2143.6"},{"label":"split_canvas_h","value":"2856.4"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0037__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0037","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"841.3,1357.0 856.3,1237.8 1050.3,1171.3 1099.9,714.3 906.7,685.1 902.8,738.7 713.6,748.4 783.7,1266.5 838.1,1245.0 841.3,1357.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0037__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[572.1,643.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49450057028473,38.578306250152266]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,643.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49361970074173,38.5780312635778]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49408563642733,38.5771061828885]}},{"type":"Feature","properties":{"resourceCoords":[572.1,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49496650597032,38.57738116946297]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0038__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p38 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.30"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2032.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2400.0"},{"label":"split_canvas_h","value":"2574.4"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0038__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0038","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"894.9,597.6 1046.8,537.0 1020.7,49.0 997.3,41.2 955.0,55.2 838.9,129.8 552.9,100.3 546.0,614.8 894.9,597.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0038__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[508.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49130175591918,38.578851359400325]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48931591122633,38.57833383727753]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,643.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49002147064895,38.57665576818702]}},{"type":"Feature","properties":{"resourceCoords":[508.0,643.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49200731534181,38.57717329030981]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0039__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p39 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.85"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2542.4"},{"label":"split_canvas_w","value":"4432.0"},{"label":"split_canvas_h","value":"2889.6"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0039__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0039","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"317.9,1311.6 392.8,1276.8 377.2,1216.0 466.8,1195.7 783.3,1199.4 820.3,1263.0 1025.8,1269.1 1046.8,1340.4 1055.9,1340.3 1054.3,1144.1 1080.0,1144.1 1052.2,706.5 857.1,671.4 167.9,677.9 93.8,728.6 67.6,905.1 103.2,1112.0 139.9,1112.0 317.9,1311.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0039__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,635.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48764297219954,38.58514248894404]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,635.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48388252005722,38.58413885174609]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48472006140373,38.58222014928253]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48848051354605,38.583223786480474]}},{"type":"Feature","properties":{"resourceCoords":[1054.0,731.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.484177,38.583933]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0040__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p40 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.71"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2533.2"},{"label":"split_canvas_w","value":"2170.0"},{"label":"split_canvas_h","value":"2898.8"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0040__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0040","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"466.6,1146.1 466.4,1031.2 460.1,692.8 91.7,727.3 57.4,919.5 73.2,1184.6 27.5,1270.4 51.5,1340.3 57.9,1340.4 80.5,1340.6 79.9,1146.1 317.1,1147.0 466.6,1146.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0040__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[79.9,1146.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4880541,38.5749929]}},{"type":"Feature","properties":{"resourceCoords":[466.6,1146.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4867219,38.5746357]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0040__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p40 [4]","metadata":[{"label":"streets","value":"1"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.65"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2145.2"},{"label":"split_canvas_y","value":"2550.4"},{"label":"split_canvas_w","value":"2286.8"},{"label":"split_canvas_h","value":"2881.6"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0040__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0040","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1001.4,1188.8 1000.7,1153.2 1000.5,1104.5 1036.5,1102.7 1107.0,1047.7 1107.0,766.1 1107.0,749.9 1013.6,689.1 900.5,733.3 662.9,701.8 608.5,709.3 615.1,1058.8 615.3,1177.5 615.4,1194.5 1001.4,1188.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0040__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[536.3,637.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48639180396829,38.576068109841266]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,637.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48445191791816,38.57554672129904]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48529240625007,38.57363473627512]}},{"type":"Feature","properties":{"resourceCoords":[536.3,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48723229230019,38.57415612481734]}},{"type":"Feature","properties":{"resourceCoords":[615.2,1150.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4867219,38.5746357]}},{"type":"Feature","properties":{"resourceCoords":[615.2,1150.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4865867,38.574945]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p41","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.41"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0041","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"207.2,1085.8 226.0,1079.3 181.2,933.2 182.1,266.6 257.9,220.5 953.9,204.7 961.6,38.5 976.7,38.6 976.3,100.8 980.7,241.5 975.2,654.1 978.1,1002.0 976.9,1271.2 826.5,1271.8 826.2,1350.0 829.2,1352.9 828.0,1357.0 824.0,1348.0 794.0,1348.0 793.0,1357.0 786.0,1357.0 785.0,1348.0 760.0,1348.0 759.0,1357.0 300.2,1357.0 300.3,1148.8 207.2,1085.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0041/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48427331736644,38.57859361884576]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48051208722742,38.57758168180363]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48208741040618,38.57395229081069]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4858486405452,38.57496422785282]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p42","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0042","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"150.0,1063.0 350.0,1063.3 755.9,1061.7 810.1,1063.9 971.0,1063.5 993.1,822.8 934.0,238.1 936.7,231.1 670.0,234.4 270.8,235.1 145.8,233.2 149.7,580.4 149.3,848.9 1.0,849.4 1.0,928.3 142.3,1062.9 150.0,1063.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[150.0,1063.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4826804,38.5737305]}},{"type":"Feature","properties":{"resourceCoords":[930.0,1063.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4800105,38.5730154]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p43","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0043","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1082.3,1243.6 1078.5,868.6 1077.6,444.7 1077.1,394.3 1076.7,87.8 1076.2,53.8 1075.5,1.0 1024.3,1.0 1025.2,32.8 549.5,26.9 550.4,4.6 314.9,4.6 281.8,22.2 288.2,25.4 34.5,66.9 64.0,141.6 40.2,460.4 92.9,1242.1 149.5,1273.8 648.0,1271.8 940.3,1202.8 1082.3,1243.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0043/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.5078467,38.5805082]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.5040931,38.5795076]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.5056619,38.5759112]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.5094155,38.5769118]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p44","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0044","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"150.1,80.2 150.1,77.8 149.8,43.9 542.4,43.8 540.3,438.9 504.8,438.7 186.2,435.3 148.4,434.1 148.2,383.8 150.1,80.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0044/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[148.0,53.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.50427963524287,38.57937122043773]}},{"type":"Feature","properties":{"resourceCoords":[929.0,53.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.50162245466515,38.57867996969811]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p46","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0046/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0046","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"927.2,1268.6 930.8,880.1 935.6,643.0 942.8,57.5 555.4,51.0 158.0,43.9 92.5,42.9 1.0,132.0 1.0,1208.2 69.5,1209.6 116.9,1255.8 139.6,1256.4 927.2,1268.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0046/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[149.0,52.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.49899705746411,38.57794692020751]}},{"type":"Feature","properties":{"resourceCoords":[924.0,52.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.49634756037814,38.57727838013902]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p47","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0047/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0047","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"266.9,1268.2 257.7,1268.5 224.8,1269.8 215.1,882.6 211.8,646.1 198.9,62.5 231.8,43.3 309.1,41.8 321.6,70.7 366.4,105.3 411.8,108.4 462.9,77.8 481.8,42.0 586.4,40.8 588.5,115.0 641.3,63.5 642.2,87.6 760.5,34.6 943.5,89.0 805.2,436.3 984.5,434.1 991.5,667.2 1107.0,823.0 1107.0,1047.3 1003.2,1049.3 1006.4,1254.5 934.6,1254.5 839.2,1357.0 410.6,1357.0 410.4,1334.3 266.9,1268.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0047/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[216.0,57.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4962246735279,38.57724581374305]}},{"type":"Feature","properties":{"resourceCoords":[604.0,57.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.49490978168657,38.5768745884676]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0049__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p49 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1680.4"},{"label":"split_canvas_w","value":"4432.0"},{"label":"split_canvas_h","value":"3751.6"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0049__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0049","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"336.7,1282.8 337.1,1357.0 655.0,1357.0 656.0,1348.0 675.0,1348.0 676.0,1357.0 684.0,1357.0 685.0,1348.0 701.0,1348.0 702.0,1357.0 733.0,1357.0 734.0,1348.0 777.0,1345.0 779.0,1345.0 812.0,1344.0 813.0,1357.0 839.0,1357.0 838.5,1309.6 897.5,1257.7 981.0,1257.0 977.5,433.4 968.2,433.4 963.5,460.5 213.4,462.6 214.4,440.0 191.4,440.2 194.2,643.7 196.7,1055.3 198.0,1219.2 198.1,1263.8 227.2,1263.5 307.3,1262.8 336.7,1282.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0049__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,420.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49176180830375,38.57496326071633]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,420.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4880183632586,38.57393853795093]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48912019846256,38.57144344138489]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4928636435077,38.572468164150294]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0049__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p49 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.24"},{"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":"4432.0"},{"label":"split_canvas_h","value":"1714.8"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0049__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0049","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"637.1,406.2 678.7,391.7 997.3,390.2 993.2,371.2 1075.1,342.6 1075.2,79.9 945.1,102.3 790.7,69.5 513.3,71.9 364.4,106.0 317.8,96.8 311.4,78.6 190.7,113.0 167.0,52.5 138.0,49.8 118.2,51.6 155.6,158.5 145.8,162.4 167.5,289.1 169.0,285.8 177.9,302.3 178.8,419.9 308.5,424.1 308.2,385.9 379.8,385.2 379.4,297.2 587.2,320.9 587.5,384.2 637.1,384.0 637.1,406.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0049__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[587.0,285.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.505931,38.5824036]}},{"type":"Feature","properties":{"resourceCoords":[169.0,285.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.5069178,38.5801948]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p50","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0050","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"139.6,436.6 130.3,436.6 143.2,365.6 109.8,267.1 139.6,267.5 139.8,68.0 383.2,69.8 536.5,69.4 536.5,86.3 926.6,98.0 928.6,229.9 932.2,479.9 930.9,1272.8 138.3,1271.8 139.6,436.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0050/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[535.0,61.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.48671728643286,38.57465913834186]}},{"type":"Feature","properties":{"resourceCoords":[141.0,61.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4880420917093,38.57501015723047]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0051/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p51","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.82"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0051/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0051","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"991.0,1312.8 991.6,1105.8 992.1,934.0 993.5,451.0 991.3,107.2 992.0,65.0 984.2,64.8 917.9,1.0 332.1,1.0 243.0,64.9 207.0,65.0 206.9,112.9 209.2,278.5 212.4,525.9 209.8,1310.5 240.7,1310.4 557.2,1309.2 949.7,1310.5 991.0,1312.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0051/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[207.0,65.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4853491,38.5744338]}},{"type":"Feature","properties":{"resourceCoords":[992.0,65.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4826804,38.5737305]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0052/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p52","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0052/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0052","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"147.0,901.5 144.3,423.3 139.2,82.9 139.5,41.1 339.2,40.8 744.5,37.6 798.6,39.6 959.3,38.7 958.0,53.0 920.6,76.0 972.3,239.5 956.7,703.5 995.7,816.0 1046.8,803.3 1047.0,1080.4 961.6,1110.0 954.5,1147.8 993.2,1271.7 928.5,1272.1 922.8,1069.1 535.6,1070.9 535.8,1115.0 147.2,933.0 147.0,901.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0052/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[143.0,70.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.48270276377323,38.57365002519994]}},{"type":"Feature","properties":{"resourceCoords":[929.0,70.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.48001174836423,38.57292070626429]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0053/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p53","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.40"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0053/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0053","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"290.7,1272.9 301.9,1249.6 302.6,1079.1 449.3,1080.3 694.0,945.6 694.7,875.2 1092.8,879.4 1095.4,468.0 1098.5,1.0 1081.6,1.0 1080.0,35.5 146.9,24.2 61.9,123.8 43.7,532.7 80.3,627.6 47.9,653.6 40.5,1079.3 120.0,1256.8 210.9,1236.8 290.7,1272.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0053/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50758718433333,38.57436028900631]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50386357533158,38.57338629639468]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.505379812692,38.56979316946212]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50910342169375,38.57076716207375]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p54","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.66"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0054/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0054","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"919.3,1264.3 905.3,1241.5 855.2,1227.8 184.7,1237.1 140.7,1224.0 141.8,852.2 146.3,431.9 184.2,433.2 353.1,435.2 502.4,437.0 504.8,437.0 537.8,437.2 542.1,44.7 934.6,50.0 977.3,51.2 1107.0,54.5 1107.0,1260.7 1106.3,1261.4 1106.3,1265.8 954.0,1264.5 919.3,1264.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0054/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50472433554556,38.57964498924593]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50094921980244,38.57866732653509]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50247115809165,38.57502446806793]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50624627383478,38.57600213077877]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0055/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p55","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0055/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0055","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"187.2,811.0 203.7,810.8 205.2,1270.8 982.6,1266.7 986.0,817.7 978.8,44.9 956.2,44.8 909.4,1.0 389.4,1.0 389.9,41.2 388.3,43.0 388.3,47.3 236.7,48.0 202.2,48.2 214.2,102.1 187.2,811.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0055/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50364174719999,38.575757760309315]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49986557410321,38.57473778250816]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.5014533721298,38.57109387474831]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50522954522658,38.572113852549464]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p56","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0056/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0056","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"542.8,1241.5 542.8,1228.3 738.5,1034.2 714.8,1034.5 852.9,818.7 934.2,818.0 931.2,620.9 959.1,620.6 1065.5,568.7 1107.0,568.7 1107.0,66.7 966.5,1.0 931.1,1.0 921.9,1.3 132.9,11.6 149.7,792.7 151.8,1246.5 542.8,1241.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0056/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.5007937877825,38.57489125783873]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49704858748399,38.57385333698498]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49867546634842,38.570264083843355]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50242066664693,38.5713020046971]}},{"type":"Feature","properties":{"resourceCoords":[151.0,1041.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.5015305,38.5719984]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0057/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p57","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.30"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0057/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0057","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"627.4,1274.4 721.6,1357.0 794.0,1357.0 795.0,1348.0 844.0,1347.0 845.0,1357.0 850.0,1357.0 851.0,1348.0 878.0,1347.0 908.0,1348.0 909.0,1357.0 935.0,1357.0 936.0,1347.0 1107.0,1346.0 1107.0,1.0 714.0,1.0 610.1,51.4 582.3,51.7 584.4,246.8 503.6,247.5 365.3,461.1 388.8,460.8 193.3,652.9 193.3,666.0 221.7,665.6 463.1,1067.8 588.6,1066.5 589.2,1099.4 592.4,1275.1 627.4,1274.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0057/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50030612903154,38.57306474903748]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49654232631484,38.57202097764365]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49816714186761,38.568388957962775]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50193094458432,38.5694327293566]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p58","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.66"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0058","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"42.3,249.3 1.0,291.9 1.0,1346.0 125.0,1344.0 126.0,1357.0 144.0,1357.0 145.0,1348.0 173.0,1344.0 278.0,1346.0 279.0,1357.0 312.0,1357.0 313.0,1344.0 329.0,1344.0 330.0,1357.0 335.0,1357.0 336.0,1348.0 372.0,1348.0 373.0,1357.0 435.0,1357.0 436.0,1343.0 459.0,1344.0 460.0,1357.0 465.0,1357.0 466.0,1344.0 498.0,1344.0 499.0,1357.0 576.0,1357.0 576.0,1346.0 606.0,1343.0 607.0,1357.0 968.9,1357.0 968.9,1326.1 970.0,658.4 1037.0,658.1 1107.0,608.5 1107.0,268.1 1079.0,248.8 999.5,249.0 970.8,249.2 970.9,204.9 970.9,168.4 503.9,119.2 506.0,45.8 412.8,46.1 411.7,1.0 220.4,1.0 219.5,46.6 115.0,46.8 113.9,250.4 42.3,249.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0058/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49510937944856,38.57409505779012]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49132497344853,38.57307967823834]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49290557148176,38.569427729125074]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4966899774818,38.570443108676855]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p60","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0060/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0060","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"307.6,1328.1 307.4,1347.7 323.0,1348.0 324.0,1357.0 394.0,1357.0 395.0,1346.0 500.0,1345.0 501.0,1357.0 570.0,1357.0 571.0,1346.0 621.0,1346.0 622.0,1357.0 651.0,1357.0 652.0,1348.0 671.0,1348.0 672.0,1357.0 673.0,1348.0 689.0,1348.0 690.0,1357.0 691.0,1348.0 712.0,1348.0 713.0,1357.0 714.0,1346.0 730.0,1346.0 731.0,1357.0 746.0,1357.0 747.0,1346.0 786.0,1344.0 790.0,1357.0 810.0,1357.0 811.0,1348.0 828.0,1348.0 829.0,1357.0 929.0,1357.0 930.0,1348.0 951.0,1348.0 952.0,1357.0 1098.0,1357.0 1098.0,1349.0 1107.0,1348.0 1107.0,48.5 959.3,49.4 928.4,49.5 142.8,48.8 59.5,48.7 1.0,99.1 1.0,422.4 72.4,423.4 123.2,461.2 140.7,461.3 136.3,1277.7 219.2,1277.8 307.6,1328.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0060/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48985956576782,38.57208839279617]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48610118747281,38.571091721553046]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4876526516431,38.56746486242081]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4914110299381,38.568461533663935]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p61","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.67"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0061/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0061","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"11.7,1291.1 115.3,1288.9 182.1,1287.4 605.2,1277.8 675.0,1272.8 804.2,810.5 784.1,456.5 848.1,455.2 581.2,54.1 578.6,54.1 537.5,53.0 146.8,62.7 1.0,67.4 1.0,885.8 11.7,1291.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0061/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48600311894302,38.571123323780576]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48225695468254,38.57004285262502]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48393886654796,38.56642778206573]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48768503080844,38.567508253221284]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0062/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p62","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.44"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0062/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0062","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"926.1,1174.4 926.0,1132.8 531.2,1044.5 531.2,1067.2 395.8,1072.7 350.7,1222.4 337.6,867.2 401.8,867.2 142.4,459.9 139.8,459.9 139.7,254.6 139.6,115.6 530.4,298.2 530.4,254.0 920.6,252.4 925.4,455.9 990.6,455.5 997.3,477.1 1045.8,470.6 973.1,495.5 955.5,577.2 1038.9,887.8 926.1,1174.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0062/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48405167541817,38.57177382223095]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48028752699433,38.57075498261496]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48187344802712,38.56712243744413]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48563759645096,38.56814127706012]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0066/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p66","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0066/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0066","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"152.4,1237.1 152.3,1064.9 151.9,453.8 151.7,48.4 931.4,46.5 927.4,450.9 1107.0,451.4 1107.0,456.3 1107.0,464.9 1045.8,485.7 1046.2,591.3 869.0,681.8 840.5,777.1 874.2,876.4 793.9,893.6 850.1,909.8 655.9,935.5 711.3,1143.3 561.2,1179.2 538.6,1217.1 541.0,1249.9 541.0,1269.7 152.4,1270.3 152.4,1237.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0066/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50488853997129,38.57242672585254]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50111946342008,38.5714183201051]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50268915388834,38.56778104400859]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50645823043955,38.568789449756025]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0067__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p67 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.73"},{"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":"4432.0"},{"label":"split_canvas_h","value":"5432.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0067__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0067","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1070.3,1209.6 1068.6,1006.5 1107.0,992.9 1107.0,722.2 1016.5,642.8 981.7,643.5 979.8,533.8 978.6,468.7 978.1,436.0 853.2,437.2 613.4,36.9 585.1,37.2 198.0,42.0 198.2,443.4 376.5,442.1 376.6,455.4 388.1,451.4 551.0,469.4 580.2,509.3 601.1,1141.8 982.8,1114.1 982.0,1046.9 982.0,1037.1 1068.0,1006.6 1069.8,1210.1 1070.3,1209.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0067__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.5023999235096,38.571754592235514]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49861583250521,38.57070747497766]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50024579044869,38.567055729416815]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50402988145308,38.56810284667467]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p69","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0069/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0069","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1004.1,1.0 1.0,1.0 1.0,1183.6 105.7,1267.7 159.9,1267.0 158.4,1094.0 546.8,1175.8 547.3,1262.5 1014.7,1256.7 1015.0,1275.7 1107.0,1274.4 1107.0,495.6 1030.4,441.6 1007.8,441.9 1004.1,1.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0069/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4968815679764,38.57029273654625]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4931185177562,38.56924914215027]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49474295263573,38.5656176135761]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49850600285593,38.56666120797208]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p70","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.55"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0070/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0070","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"257.4,1329.0 257.4,1357.0 1107.0,1357.0 1107.0,901.2 1018.9,852.5 936.0,853.5 930.1,37.1 912.6,37.2 862.8,1.0 276.6,1.0 215.2,45.3 147.7,46.2 152.7,719.4 153.0,765.7 1.0,765.1 1.0,829.5 153.5,829.7 156.7,1274.2 179.4,1274.0 257.4,1329.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0070/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49300647679333,38.57169639784188]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48926474412562,38.57066246024398]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49087409609763,38.56705138892037]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49461582876533,38.56808532651827]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0072/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p72","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.41"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0072/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0072","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"544.9,1283.4 545.0,1269.0 790.3,1269.1 936.6,1265.5 920.3,1223.1 953.2,1055.1 923.1,444.5 929.6,443.8 929.6,443.3 537.5,78.9 537.5,77.0 537.0,41.7 112.9,44.9 1.0,45.6 1.0,1189.5 100.5,1274.5 155.4,1274.5 155.5,1288.4 544.9,1283.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0072/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48731173416381,38.567743700166034]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48355274030202,38.566710326401264]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48516123069386,38.56308263282389]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48892022455566,38.56411600658866]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0073/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p73","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.31"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0073/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0073","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"586.4,1254.2 193.8,891.4 193.8,889.5 193.2,854.3 263.0,850.2 441.9,239.4 577.0,232.8 576.9,210.2 971.6,295.3 972.0,336.9 1082.4,49.9 1089.7,76.2 1090.6,237.5 1042.5,259.5 1092.2,443.9 1035.0,469.1 1044.6,1116.9 923.4,1220.2 586.4,1254.8 586.4,1254.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0073/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48517313494806,38.56959638090289]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48141274962718,38.568552980614825]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48303684059933,38.56492393048098]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.4867972259202,38.56596733076904]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0074/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p74","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0074/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0074","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"150.0,1042.4 148.2,841.0 148.2,427.8 144.4,225.0 144.6,52.1 144.8,16.1 388.9,17.0 534.4,13.8 544.6,33.0 998.2,87.4 1053.8,406.6 1031.4,778.2 1058.7,900.1 997.0,1144.0 884.6,1213.4 637.5,1243.8 383.4,1210.9 155.9,1233.4 150.0,1042.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0074/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[541.0,1218.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.48704107282272,38.56026907642426]}},{"type":"Feature","properties":{"resourceCoords":[144.0,1218.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.48839640270633,38.56063784041559]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0078/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p78","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.58"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0078/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0078","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"162.6,625.4 161.6,456.0 307.3,455.6 549.2,319.3 549.2,249.4 944.9,249.5 947.4,865.6 948.1,1039.2 948.1,1072.8 948.9,1278.4 895.7,1278.5 887.5,1243.5 169.7,1241.0 125.5,1037.6 156.4,650.7 151.7,648.6 162.6,625.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0078/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50779158072312,38.57259615979348]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50405794680987,38.57158621424567]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50563000650881,38.56798307806644]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50936364042207,38.56899302361425]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0079__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p79 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"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":"2268.0"},{"label":"split_canvas_h","value":"5432.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0079__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0079","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"47.0,247.0 114.6,539.0 99.2,1294.3 467.1,1295.3 453.3,1254.7 502.7,1192.6 518.2,452.3 485.0,43.8 99.0,43.4 99.4,247.2 47.0,247.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0079__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[488.0,1247.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.50590565891108,38.565306632603225]}},{"type":"Feature","properties":{"resourceCoords":[99.0,1247.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.50723877060979,38.56566053225141]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0079__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p79 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.61"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2229.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2202.4"},{"label":"split_canvas_h","value":"5432.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0079__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0079","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"639.6,147.4 657.2,863.4 633.3,1154.0 633.2,1174.5 657.6,1218.1 776.7,1257.4 1017.2,1225.1 1021.3,1246.7 1019.9,666.2 1021.2,259.4 1060.8,259.0 1107.0,219.7 1107.0,16.3 1020.9,46.0 1020.8,55.9 1021.0,123.0 639.6,147.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0079__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[557.4,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50182664555544,38.56858993833394]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49993807386517,38.56808147746621]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50152957554296,38.564416424536496]}},{"type":"Feature","properties":{"resourceCoords":[557.4,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.50341814723325,38.56492488540423]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.46"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0008","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"147.1,1245.9 546.6,1244.3 546.1,1241.3 752.1,1200.6 862.8,1217.3 874.6,1243.2 918.2,1243.0 920.7,840.3 926.5,639.1 926.1,436.0 967.3,435.8 914.1,52.9 71.1,43.6 44.5,82.5 81.2,218.9 30.6,261.0 31.7,454.2 73.6,459.8 90.6,553.2 34.6,681.6 20.8,875.0 38.2,1042.8 103.3,1174.4 1.0,1212.7 1.0,1217.8 7.1,1246.8 115.7,1246.0 147.1,1245.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49290670756997,38.5863710409743]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48908203581725,38.58534049582622]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49068658551563,38.58165048162846]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.49451125726836,38.582681026776534]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0080/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p80","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0080/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0080","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"43.5,1032.6 84.0,1245.7 567.4,1271.3 1035.5,1222.3 1048.1,1225.9 1045.6,1132.7 1040.7,1081.0 1041.6,894.2 1035.8,864.1 1068.1,864.5 968.9,454.0 814.8,453.1 820.2,249.3 820.4,44.0 766.9,44.1 714.8,1.0 135.2,1.0 82.7,45.6 43.3,45.9 42.0,452.5 43.5,1032.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0080/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1043.0,1070.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.49828839599706,38.56377962661652]}},{"type":"Feature","properties":{"resourceCoords":[424.0,1070.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.50042606342403,38.56434719068441]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0081/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p81","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0081/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0081","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"395.3,1102.8 390.9,1051.5 393.4,866.5 387.8,836.6 419.8,837.3 325.0,429.7 172.3,427.5 179.3,225.6 181.3,22.2 560.5,26.2 1018.2,30.5 1018.1,66.5 1015.8,430.9 1022.1,430.9 1014.5,840.6 1005.6,840.5 1004.6,1214.2 624.5,1260.5 397.0,1195.2 395.3,1102.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0081/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[388.0,1050.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4983174817353,38.563758958970716]}},{"type":"Feature","properties":{"resourceCoords":[1025.0,1241.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.49631167741816,38.56266225120678]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0082/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p82","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.30"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0082/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0082","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"146.0,1202.5 578.9,1259.8 802.1,1240.3 936.9,1184.7 935.3,816.0 936.3,1.0 150.5,1.0 150.6,17.9 151.2,394.0 157.7,394.0 153.2,816.9 143.9,816.9 146.0,1202.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0082/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[544.0,1233.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4950428,38.5623171]}},{"type":"Feature","properties":{"resourceCoords":[937.0,1233.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4937156,38.5619653]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0083/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p83","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.75"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0083/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0083","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"235.9,1204.8 543.5,1280.8 764.9,1265.7 991.9,1193.3 1011.4,1212.5 1010.4,1103.0 1012.0,842.1 1009.1,842.1 1010.2,433.9 1012.0,433.9 1011.8,57.6 1011.9,39.4 1107.0,39.0 1107.0,1.0 1094.9,1.0 1094.0,14.0 86.0,15.0 85.1,1.0 1.0,1.0 1.0,38.7 233.0,38.2 233.7,841.8 235.9,1204.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0083/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[620.0,1254.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4924018,38.5616099]}},{"type":"Feature","properties":{"resourceCoords":[1011.0,1254.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4910617,38.5612524]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0084/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p84","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.62"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0084/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0084","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"155.5,1188.9 189.5,1222.6 496.5,1256.7 944.0,1217.0 939.9,1023.7 940.1,819.9 944.3,401.9 942.4,196.8 944.4,21.9 944.7,1.0 160.5,1.0 160.4,18.5 159.2,399.9 157.3,399.9 154.7,813.6 157.7,813.6 154.9,1078.0 155.5,1188.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0084/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[549.0,1231.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4897276,38.5609009]}},{"type":"Feature","properties":{"resourceCoords":[155.0,1231.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4910617,38.5612524]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0088/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p88","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0088/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0088","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"807.3,1251.8 642.7,1308.4 247.5,1244.8 78.0,1272.5 24.1,1234.7 20.4,1164.5 67.4,1122.7 20.3,985.5 12.8,502.5 70.1,416.4 43.2,323.3 77.8,96.7 446.3,82.5 875.0,139.6 1029.1,96.9 1107.0,605.2 1107.0,902.8 1106.8,1215.3 1057.1,1309.0 807.3,1251.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0088/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48025944331212,38.59371741944259]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.47652018681592,38.59271235545114]}},{"type":"Feature","properties":{"resourceCoords":[1108.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.47809556451374,38.589128798616635]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1358.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-121.48183482100994,38.590133862608084]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0089__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sacramento, California | 1952 | sanborn00799_006 p89 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"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":"0.0"},{"label":"split_canvas_w","value":"4432.0"},{"label":"split_canvas_h","value":"5432.0"}],"created":"2026-10-17T03:20:51Z","modified":"2026-10-17T03:20:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0089__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0089","type":"ImageService3","width":1108,"height":1358},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"599.8,1082.0 597.6,1156.4 1068.7,1208.3 1068.5,1080.6 1068.5,666.6 1067.0,462.0 1090.0,462.0 1107.0,117.4 1070.0,23.1 542.6,28.5 454.4,83.8 347.7,69.0 198.6,124.6 164.8,113.8 18.6,460.5 199.0,462.0 201.4,696.6 304.5,841.9 499.8,835.7 505.8,1081.9 599.8,1082.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00799195201:00799_01_1952-0089__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[199.0,462.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.494082,38.5755114]}},{"type":"Feature","properties":{"resourceCoords":[1067.0,462.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.4911386,38.5747327]}}]}}]}