Subjects
- Physicians -- Michigan.1
- Pickets.1
- Pickles.1
- Pinsetters.1
- Plank roads -- Michigan.1
- Playboy bunny.1
- Police -- Michigan.1
- Police stations -- Michigan.1
- Poliomyelitis vaccine.1
- Political conventions -- Michigan -- Detroit.1
- Politicians -- Michigan.1
- Presidents -- United States -- Election -- 1896.1
- Presidents -- United States -- Election -- 1940.1
- Printing industry.1
- Prison facilities -- Michigan -- Jackson.1
- Prison facilities -- Michigan.1
- Prisoners of war -- Germany.1
- Prisoners of war -- United States.1
- Project Telstar.1
- Public lands -- United States.1