Author
Clark, William, 1770-1838
4
Lewis, Meriwether, 1774-1809
4
Baird, Spencer Fullerton, 1823-1887
3
Bowles, Samuel, 1826-1878
3
Frémont, John Charles, 1813-1890
3
Hall, James, 1811-1898
3
Torrey, John, 1796-1873
3
United States. War Department
3
American Board of Commissioners for Foreign Missions
2
Catlin, George, 1796-1872
2
Coues, Elliott, 1842-1899
2
De Voto, Bernard, 1897-1955
2
Gass, Patrick, 1771-1870
2
Girard, Charles, 1822-1895
2
Haldeman, Samuel Stehman, 1812-1880
2
James, Edwin, 1797-1861
2
Long, Stephen H. 1784-1864
2
Pike, Zebulon Montgomery, 1779-1813
2
Say, Thomas, 1787-1834
2
Stansbury, Howard, 1806-1863
2
United States. Army. Corps of Engineers
2
United States. Army. Corps of Topographical Engineers
2
United States. National Park Service
2
Utley, Robert M., 1929-2022
2
1796- Hall, Ja
1
Abell, Sam,
1
Allen, John Logan, 1941-
1
Ambrose, Stephen E.,
1
Anderson, Andy
1
Ashley, William Henry, 1778-1838
1
Bandel, Eugene, 1835-1889
1
Bandel, Olga
1
Beale, Edward Fitzgerald, 1822-1893
1
Biddle, Nicholas, 1786-1844,
1
Bieber, Ralph P. 1894-
1
Blackmore, William, d. 1878
1
Blevins, Cameron,
1
Bodmer, Carl,
1
Boller, Henry A.
1
Bolton, Herbert Eugene, 1870-1953
1
Bonneville, Benjamin Louis Eulalie de, 1796-1878
1
Brinkley, Douglas,
1
Bruce, Robert, 1873-
1
Bryan, Enoch Albert, 1855-1941
1
Buecker, Thomas R.
1
Calloway, Colin G. 1953-
1
Carrington, Henry B., 1824-1912
1
Carvalho, Solomon Nunes, 1815-1897,
1
Castañeda de Nájera, Pedro de, active 16th century
1
Chaffin, Tom
1
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