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?t=t&id=56813420 Sketch A, showing the primary triangulation in section no. 1, from 1844 to 1854 / U.S Coast Survey, A.D. Bache, superintendent.
From Parts (In 4 layers) Depicts: 1854 Last modified over 1 year ago. Unrectified.
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Layer List for Map 30942
Layer Title Year Number of Maps  Sort asc Percent Complete
?t=t&id=1030033 Parts
Last modified 1 day ago. Bibiliographic records: Digital Collections
532 maps 21%
(111 maps)
?t=t&id=5821557 Maps of North America
Last modified about 9 hours ago. Depicts : Download KML Bibiliographic records: Digital Collections
2359 maps 9%
(204 maps)
?t=t&id=1030033 United States (except New York)
Last modified about 9 hours ago. Bibiliographic records: Digital Collections
3201 maps 14%
(454 maps)
?t=t&id=1030033 Countries
Last modified about 9 hours ago. Bibiliographic records: Digital Collections
3242 maps 14%
(470 maps)
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