Names
- Ku Klux Klan (1915-)1
- LaFollette, Philip Fox, 1897-1965.1
- Lamont, Daniel Scott, 1851-1905.1
- Lamont, Robert Patterson, 1867-1948.1
- Landon, Alfred M. (Alfred Mossman), 1887-19871
- Landon, Alfred M. (Alfred Mossman), 1887-1987.1
- Lane, Alfred C. (Alfred Church), 1863-1
- Lane, Robert Porter, 1891-1953.1
- Larue, George R. (George Roger), 1882-1
- LeHand, Margaret.1
- League of Nations.1
- Lehman, Herbert H. (Herbert Henry), 1878-1963.1
- Lewis, James H.1
- Lewis, John Llewellyn, 1880-19691
- Lilienthal, David Eli, 1899-1981.1
- Lincoln, Esther, 1879-1961.1
- Lindbergh, Charles A. (Charles Augustus), 1902-1974.1
- Lindley, Ernest Kidder, 1899-1
- Lippmann, Walter, 1889-1974.1
- Litchfield, Edward H. (Edward Harold), 1914-1968.1