Creator
- Muskegon County (Mich.)1
- Muskegon County Road Commission1
- Newaygo County (Mich.)1
- Newaygo County Chamber of Commerce1
- Oceana County (Mich.)1
- Ogemaw County (Mich.)1
- Ogemaw County Road Commission1
- Ogemaw County Tourist and Sportsman's Association1
- Ontonagon Country, Inc1
- Ontonagon Herald Company1
- 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
- Penny, R. (Engraver)1
- Phelps, Lee R.1
- Price, Charles1
- Public Roads Administration1