Names
- Marquette, Houghton and Ontonagon Railroad Company.1
- Mason and Oceana Railroad Company.1
- Masten, C. C.1
- McKay, Frank D., 1883-1
- Michigan Central Railroad Company.1
- Michigan Electric Railway Company.1
- Michigan Railway Company (1914-1921)1
- Michigan. Judges' Retirement Board.1
- Michigan. Supreme Court.1
- Milliken family.1
- Milliken, John.1
- Milliken, William G., 1922-1
- Mineral Range Railroad Company.1
- Miriani, Louis C.1
- Mitchell Bros. Company.1
- Moore, Park & Sharp.1
- Mott, Charles Stewart, 1875-1973.1
- Mount Washington Railway Company.1
- Munising Railway Company.1
- Nahma & Northern Railroad.1