- Long, J. C., 1903-19842
- Lynching2
- McCullough, R. Alex (Roland Alex), 1917-2
- Medical College of the State of South Carolina2
- Memorial Youth Center (Columbia, S.C.)2
- Mid-century White House Conference on Children and Youth (1950 : Washington, D.C.)2
- Military Government Association (U.S.)2
- Military spending2
- Monteith, Colin S. (Colin Smith), Jr., 1902-19892
- Mémorial du Mardasson (Bastogne, Belgium)2
- National Arbor Day2
- National Association of Real Estate Boards2
- National Exchange Club2
- National Home Demonstration Council (U.S.)2
- National Rivers and Harbors Congress2
- National Science Foundation (U.S.)2
- National security2
- Neighborliness2
- Newspaper carriers2
- Nuclear disarmament,Inter-parliamentary Union. Conference2