- McCracken, T.1
- Mead, Cecil A.1
- Mecosta County Road Commission1
- Merrell, H. B. (Harvey B.), publisher1
- Michigan Bell Telephone Company1
- Michigan Land & Iron Company1
- Michigan Mutual Life Insurance Company.1
- Michigan School Furniture Company.1
- Michigan State College. Conservation Institute1
- Michigan Technological University1
- Michigan. Department of Commissioner of Railroads1
- Midland County (Mich.)1
- Midland County Road Commission1
- Miller & Co.1
- Milwaukee Lith. & Engr. Co.1
- Missaukee County Road Commission1
- Mitchell, S. Augustus (Samuel Augustus)1
- Mitchell, S. Augustus (Samuel Augustus), 1792-1868, cartographer.1
- Molitor, Albert1
- Molitor, E.1