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The West of William H Ashleythe international struggle for the fur trade of the Missouri the Rocky Mountains and the Columbia with explorations beyond the Continental Divide recorded in the diaries and letters of William H Ashley and his contemporaries 1822-1838BookBằng Morgan, Dale L. (Dale Lowell), 1914-1971
Được phát hành 1964 -
The Ashley-Smith explorations and the discovery of a central route to the Pacific 1822-1829with the original journalsBookBằng Dale, Harrison Clifford, 1885-
Được phát hành 1941 -
Bằng Ashley, William Henry, 1778-1838
Được phát hành 1981