- Moore, Carl R. (Carl Richard), 1892-1955, author1
- Moore, Harry H. (Harry Hascall), 1881-1949, author1
- Morgan, Thomas Hunt, 1866-1945, author1
- Morgulis, Sergius, 1885-1971, author1
- Morrey, Charles Bradfield, 1869-1954, author1
- Morris, Roger Sylvester, 1877- author1
- Morse, John Lovett, 1865-1940, author1
- Mosher, Clelia Duel, 1863-1940, author1
- Muller, H. J. (Hermann Joseph), 1890-1967, author1
- Muniagurria, Camilo, 1876-1937, author1
- Murray, W. John (William John), author1
- National Association of Chiropodists (U.S.), author.1
- National Health Council (U.S.), author.1
- National Industrial Conference Board, author, issuing body.1
- Neuhof, Harold, 1884- author1
- Neuhof, Selian, 1871- author1
- Noguchi, Hideyo, 1876-1928, author1
- Noyes, Edmund, 1842-1927 author1
- O'Flaherty, Claude, 1878-1955, author1
- O'Shea, M. V. (Michael Vincent), 1866-1932, author1