Names
- MacLachlan, James Angell, 1891-1
- MacLachlan, James Angell, 1891-1967.1
- Mackinac Transportation Company.1
- Maddy, Joseph E. (Joseph Edgar), 1891-1966.1
- Manistee & Grand Rapids Railroad Company.1
- Manistee & Luther Railroad Company.1
- Manistee and Northeastern Railroad.1
- Manistique and Lake Superior Railroad Company.1
- Manistique, Marquette and Northern Railroad Company.1
- Manitou and Pike's Peak Railway Company.1
- Markley, Mary Elizabeth B., 1864-1956.1
- Marquette and Southeastern Railway Company.1
- Marquette, Houghton and Ontonagon Railroad Company.1
- Mason and Oceana Railroad Company.1
- Masten, C. C.1
- Mattern, David Earl, 1890-1959.1
- McCallum, George P. (George Porterfield), 1871-1952.1
- McClure, Harry H.1
- McLaughlin, Andrew Cunningham, 1861-1947.1
- McLouth, Lawrence Amos, 1863-1927.1