Names
- Morrill, J. L. (James Lewis), 1891-1979.1
- Morrill, James Lewis, 1891-1
- Muir, Ramsay, 1872-1941.1
- Murphy, Frank, 1890-1949.1
- Myers, Albert Cook, 1874-1960.1
- National Security League.1
- Nearing, Scott, 1883-1
- Nearing, Scott, 1883-1983.1
- Nelson, J. Raleigh (Joseph Raleigh)1
- Nevins, Allan, 1890-1971.1
- Newberry, Truman Handy, 1864-1945.1
- Newcombe, Frederick Charles, 1858-1927.1
- Newkirk, Henry Wirt, 1854-1946.1
- North, Lucian Gregory, 1850-1925.1
- Notestein, Wallace, 1878-1969.1
- Novy, Frederick George, 1864-1957.1
- Oberholtzer, Ellis Paxson, 1868-1936.1
- Okkelberg, Peter Olaus, 1880-1
- Orr, H. Winnett (Hiram Winnett), 1877-1956.1
- Osborn, Chase S. (Chase Salmon), 18601