Author
Parkman, Francis, 1823-1893
21
Fitzgerald Rivers of America Collection (Library of Congress)
19
Langley, Lester D.
17
United States. Army. Corps of Topographical Engineers
16
United States. Army. Corps of Engineers
13
United States. War Department
12
Lewis, Meriwether, 1774-1809
11
Pike, Zebulon Montgomery, 1779-1813
11
Clark, William, 1770-1838
10
Frémont, John Charles, 1813-1890
10
Kennedy, Roger G.
10
Whitaker, Arthur Preston, 1895-1979
10
James, Henry, 1843-1916
9
Falcoff, Mark
8
Fiske, John, 1842-1901
8
Powell, John Wesley, 1834-1902
8
Aikman, Lonnelle
7
Fagen, Richard R.
7
Foner, Philip Sheldon, 1910-1994
7
Hayden, Tom
7
Munro, Dana Gardner, 1892-1990
7
Olmsted, Frederick Law, 1822-1903
7
Rippy, J. Fred (James Fred), 1892-1977
7
Time-Life Books
7
Wiarda, Howard J., 1939-
7
Wood, Bryce, 1909-1986
7
American Assembly
6
Bush, George W. (George Walker), 1946-
6
Council on Foreign Relations
6
Hulbert, Archer Butler, 1873-1933
6
Jackson, Donald, 1919-1987
6
Jonas, Susanne, 1941-
6
Jones, Chester Lloyd, 1881-1941
6
Kinzer, Stephen
6
Leonard, Thomas M., 1937-
6
McPherson, Alan L.
6
National Geographic Society (U.S.)
6
Schoultz, Lars
6
Thoreau, Henry David, 1817-1862
6
World Peace Foundation
6
Arnson, Cynthia
5
Baird, Spencer Fullerton, 1823-1887
5
Bernstein, Harry, 1909-1993
5
Connell-Smith, Gordon
5
Crockett, Davy, 1786-1836
5
Dinges, John, 1941-
5
Gerassi, John
5
Gettleman, Marvin E.
5
Goetzmann, William H.
5
Hall, James, 1811-1898
5
more ...