Author
National Geographic Society (U.S.)
5
Powell, John Wesley, 1834-1902
5
White House Historical Association
5
Aikman, Lonnelle
4
American Assembly
3
Frémont, John Charles, 1813-1890
3
Lieuwen, Edwin, 1923-1988
3
Pike, Zebulon Montgomery, 1779-1813
3
Coerver, Don M., 1943-
2
Connell-Smith, Gordon
2
Degler, Carl N.
2
Foner, Philip Sheldon, 1910-1994
2
Grandin, Greg, 1962-
2
Hall, Linda B. 1939-
2
Langley, Lester D.
2
Matthews, Herbert Lionel, 1900-1977
2
May, Robert E.
2
Merk, Frederick, 1887-1977
2
Potter, David Morris
2
Pérez, Louis A., Jr., 1943-
2
Stansbury, Howard, 1806-1863
2
Stanton, Robert Brewster, 1846-1922
2
Time-Life Books
2
United States. Army. Corps of Topographical Engineers
2
Whitaker, Arthur Preston, 1895-1979
2
Wood, Bryce, 1909-1986
2
Worster, Donald, 1941-
2
Abbott, John C. 1921-2005
1
Abbott, Scott H.,
1
Adams, Alexander B.
1
Adams, Richard N. 1924-2018
1
Aikman, Lonnelle,
1
Alden, John Richard, 1908-1991
1
Alexander, Robert J. 1918-2010
1
Allen, Thomas B.
1
Ambrose, Stephen E.
1
Arnson, Cynthia
1
Arévalo, Juan José, 1904-1990
1
Bacha-Garza, Roseann,
1
Ball, Durwood, 1960-
1
Banning, George Hugh, 1895-
1
Banning, William, Captain
1
Barrera, Mario
1
Bartlett, Richard A.
1
Beale, Edward Fitzgerald, 1822-1893
1
Beals, Carleton, 1893-1979
1
Bennett, Lyn Ellen,
1
Biles, Robert E.
1
Billington, Ray Allen, 1903-1981
1
Binnington, Ian, 1972-
1
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