Creator
- Magoon, Charles Edward, 1861-19201
- Mansfelde, A.S. von1
- Mason, C.F.1
- Mason, E. C. (Edwin C.)2
- Matas, Rudolph, 1860-19571
- Mayer, Edgar, 1889-1
- McCain, H. P. (Henry Pinckney), 1861-19412
- McCaw, Walter D. (Walter Drew), 1863-19392
- McCoy, Frank Ross, 1874-19541
- McNinch, Joseph H.1
- Mckee, James C.1
- Michie, Robert E. Lee2
- Miller, [s.n.]1
- Moran, John J. (John Joseph), 1876-195012
- Morris, F.H.1