Creator
- Maher, Frank J. (Francis Joseph), 1915-1
- Mansbach, Gerhard, 1928-19971
- Marshak, Robert E. (Robert Eugene), 1916-19922
- Massey, A. B. (Arthur Ballard)1
- Massey, W. F.1
- McLean, F. Edward1
- McSweeney, David1
- Miller, Joe, d.20031
- Miller, Mark (Virginia Center for Innovative Technology)1
- Mine Hill and Schuylkill Haven Railroad Company1
- Morris, Henry M., 1918-20061
- Moyer, Albert E. (Albert Earl), 1945-20001
- Mullins, Nicholas C.1