Creator
- Monroe County (Mich.)1
- Monroe County Road Commission1
- Montcalm County Road Commission1
- Montmorency County (Mich.)1
- Morse, Sidney E. (Sidney Edwards)1
- Morse, Sidney E. (Sidney Edwards), 1794-18711
- Mosher, L. W.1
- Muskegon County (Mich.)1
- Muskegon County Road Commission1
- Nellist, J. F. (John F.)1
- Newaygo County (Mich.)1
- Newaygo County Chamber of Commerce1
- Nicholson, W. L.1
- Nicollet, J. N. (Joseph Nicolas), 1786-18431
- O.W. Gray & Son1
- Oceana County (Mich.)1
- Ogemaw County (Mich.)1
- Ogemaw County Road Commission1
- Ogemaw County Tourist and Sportsman's Association1
- Olmsted Brothers1