Names
- Lane, Alfred Church (1863-1948)1
- Lane, Robert Porter, 1891-1953.1
- Langley, S. P. (Samuel Pierpont), 1834-1906.1
- Langley, Samuel Pierpont (1834-1906)1
- Lilienthal, David Eli, 1899-1981.1
- Lillie, Frank Rattray (1870-1947)1
- Lillie, Frank Rattray, 1870-1947.1
- Lindbergh, Charles A. (Charles Augustus), 1902-1974.1
- Little, Clarence C. (Clarence Cook), 1888-1
- Lloyd, Alice Crocker, 1893-1950.1
- Loeb, Jacques (1859-1924)1
- Loeb, Jacques, 1859-1924.1
- Lombard, Warren P. (Warren Plimpton), 1855-1939.1
- Lorch, Emil, 1870-1963.1
- Lynch, John David, 1890-1946.1
- MacLeish, Archibald, 1892-1982.1
- Mackinac Bridge Authority (Mich.)1
- Maddy, Joseph E. (Joseph Edgar), 1891-1966.1
- Malcolm, George A. (George Arthur), 1881-1961.1
- Mapes, Carl Edgar, 1874-1939.1