Names
- Norfolk and Western Railway Company.1
- North Park Railway Company.1
- Northern Michigan Traction Company.1
- Ohio and Michigan Sand and Gravel Company.1
- Oliver Corporation.1
- Osborn, Chase S. (Chase Salmon), 1860-1
- Osborn, Chase S. (Chase Salmon), b. 18601
- Paris & Pere Marquette River Railroad Company.1
- Pearson, Drew, 1897-1969.1
- Peerless Portland Cement Company.1
- Pennsylvania Railroad.1
- Pere Marquette Line Steamers.1
- Pere Marquette Railway.1
- Photometric Products Corporation.1
- Pollock, James K. (James Kerr), 1898-1968.1
- Pollock, James Kerr, 1898-1
- Pontiac, Oxford and Northern Railroad Company.1
- Port Huron and North Western Railway Company.1
- Porter-Hicks Farm (Ann Arbor, Mich.)1
- Rio Grande Southern Railroad.1