Names
- Percy Jones Hospital (Battle Creek, Mich.)1
- Pere Marquette Line Steamers.1
- Pere Marquette Railway.1
- Pontiac, Oxford and Northern Railroad Company.1
- Port Huron and North Western Railway Company.1
- Rackham Arthritis Research Unit (University of Michigan)1
- Rackham, Horace H., 1858-1933.1
- Rackham, Mary A. Horton, -1947.1
- Renaissance Center (Detroit, Mich.)1
- Republican National Convention (32nd : 1980 : Detroit, Mich.)1
- Rio Grande Southern Railroad.1
- Saginaw Valley and St. Louis Railroad Company.1
- Saginaw, Tuscola and Huron Railroad Company.1
- Saldern Logging Company.1
- Sales, Soupy.1
- Sanger, Margaret, 1879-1966.1
- Seaman & Webster.1
- Shay, Ephraim, 1839-1916.1
- Solvay Process Company.1
- Soo Line Railroad Company.1