Creator
- 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
- Ontonagon Country, Inc1
- Ontonagon Herald Company1
- Osborn, Chase S. (Chase Salmon), 1860-19491
- Osceola County Road Commission1
- Otsego County Chamber of Commerce1
- Otsego County Road Commission1
- Otsego Land Use Planning Committee1
- Ott, R.1
- Ottawa County (Mich.)1
- P.S. Duval & Co.1
- Pettibone, Darwin A., 1827-18941