Author
Lewis, Meriwether, 1774-1809
16
Clark, William, 1770-1838
13
United States. National Park Service
6
Geological Survey (U.S.)
4
Lewis and Clark Trail Heritage Foundation
4
United States. Forest Service
4
Allen, Paul, 1775-1826
3
Biddle, Nicholas, 1786-1844
3
Lewis and Clark National Historic Trail (Agency : U.S.),
3
Moulton, Gary E.
3
Ambrose, Stephen E.
2
American Philosophical Society
2
Carver, Jonathan, 1710-1780
2
Clark, William, 1770-1838,
2
Inglebret, Ella,
2
Jefferson, Thomas, 1743-1826
2
Jones, David R.
2
Mackenzie, Alexander, 1764-1820
2
Meade, Robert H., 1930-
2
Moody, John A. 1944-
2
Pavel, D. Michael 1959-
2
Thwaites, Reuben Gold, 1853-1913
2
United States. Forest Service. Northern Region
2
United States. President (1801-1809 : Jefferson)
2
University of Nebraska--Lincoln. Center for Great Plains Studies
2
University of Oregon
2
Wood, Stephanie Gail, 1954-
2
American Meteorological Society
1
Appleman, Roy Edgar,
1
Bakeless, John, 1894-1978
1
Bakeless, John, 1894-1978,
1
Barth, Gunther Paul
1
Betts, Robert B.
1
Bridges, Jeff, 1949-
1
Cardon, Sam
1
Carr, Donald L., 1968-
1
Center of Military History
1
Center of Military History,
1
Christensen, T. C.
1
Collins, Charles D., Jr., 1955-
1
Combat Studies Institute (U.S.)
1
Combat Studies Institute (U.S.). Staff Ride Team
1
Coues, Elliott, 1842-1899
1
Cutright, Paul Russell, 1897-1988
1
De Voto, Bernard, 1897-1955,
1
Distribution Cinema
1
Duncan, Dayton
1
Dunlay, Thomas W., 1944-
1
Eddie Bauer, Inc
1
Ehrenberg, Ralph E., 1937-
1
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