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?t=t&id=56813419 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 10 months ago. 18 control points.
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Layer List for Map 30943
Layer Title Year Number of Maps Percent Complete
?t=t&id=5821557 Maps of North America
Last modified 14 days ago. Depicts : Download KML Bibiliographic records: Digital Collections
3208 maps 8%
(250 maps)
?t=t&id=1030033 Parts
Last modified 18 days ago. Bibiliographic records: Digital Collections
570 maps 19%
(111 maps)
?t=t&id=1030033 United States (except New York)
Last modified 13 days ago. Bibiliographic records: Digital Collections
4050 maps 12%
(501 maps)
?t=t&id=1030033 Countries
Last modified 13 days ago. Bibiliographic records: Digital Collections
4091 maps 13%
(517 maps)
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