Names
- Knudsen, William S., 1879-1948.1
- Krock, Arthur, 1886-1974.1
- Ku Klux Klan (1915-)1
- LaFollette, Philip Fox, 1897-1965.1
- Laski, Harold Joseph, 1893-1950.1
- LeHand, Margaret.1
- League of Nations.1
- Lehman, Herbert H. (Herbert Henry), 1878-1963.1
- Lewis, James H.1
- Lincoln, Esther, 1879-1961.1
- Lindley, Ernest Kidder, 1899-1
- Lippmann, Walter, 1889-1974.1
- Littell, Norman M.1
- Lodge, Henry Cabot, Jr., 1902-1985.1
- Long, Breckinridge, 1881-1958.1
- Luce, Clare Boothe, 1903-1987.1
- MacDonald, Kenneth.1
- Malcolm, George A. (George Arthur), 1881-1961.1
- Maloney, Francis.1
- Manning, John C. (John Charles), 1893-1967.1