Names
- Lamont, Robert Patterson, 1867-1948.1
- Lane, Alfred C. (Alfred Church), 1863-1
- Lane, Robert Porter, 1891-1953.1
- Larue, George R. (George Roger), 1882-1
- Leon and Josephine Winkelman lecture.1
- Lilienthal, David Eli, 1899-1981.1
- Lindbergh, Charles A. (Charles Augustus), 1902-1974.1
- Little, Clarence C. (Clarence Cook), 1888-1
- Lloyd, Alice Crocker, 1893-1950.1
- Lorch, Emil, 1870-1963.1
- Lynch, John David, 1890-1946.1
- Maassab, Hunein F. (John)1
- MacLeish, Archibald, 1892-1982.1
- Machen, J. Bernard.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
- Markert, Clement L. (Clement Lawrence), 1917-1999.1
- Marshall, George C. (George Catlett), 1880-1959.1