Names
- Peabody, Charles1
- Peabody, Charles.1
- Peerless Portland Cement Company.1
- Pere Marquette Line Steamers.1
- Pere Marquette Railway.1
- Pickard, Josiah Little, 1824-1914.1
- Pontiac, Oxford and Northern Railroad Company.1
- Port Huron and North Western Railway Company.1
- Pullman Company.1
- Raymond, J. Everett1
- Raymond, J. Everett.1
- Rio Grande Southern Railroad.1
- Ripley, William Zebina, 1867-1941.1
- Rogers, Henry Wade, 1853-1926.1
- Rosenthal, Lessing, 1868-1949.1
- Saginaw Valley and St. Louis Railroad Company.1
- Saginaw, Tuscola and Huron Railroad Company.1
- Saldern Logging Company.1
- Salter, William Mackintire, 1853-1931.1
- San Pedro, Los Angeles & Salt Lake Railroad Company.1