Names
- Lee, John J.1
- Leeds & Northrup Co.1
- Lewis, John Llewellyn, 1880-19691
- Lewis, John Llewellyn, 1880-1969.1
- Line, Winfield1
- Los Alamos Scientific Lab.1
- Lubin, Isador, 1896-1
- Lubin, Isador, 1896-1978.1
- MacAdam, David L.1
- MacBeth Corporation1
- Mack, Mrs. Julian E.1
- Majumdar, K.1
- Manhattan Project (U.S.)1
- Marley, Faye1
- Marshall, George C. (George Catlett), 1880-19591
- Marshall, George C. (George Catlett), 1880-1959.1
- Martin, Joseph William, 1884-1968.1
- Masterson, Keith D.1
- McLaughlin, James Campbell, 1858-19321
- McLaughlin, James Campbell, 1858-1932.1