Encyclopedias, Almanacs, Transcripts, and Maps
- Prostitution
- Protector-Admiral Duff Engagement
- Protestant Clergy
- Protestantism in the Americas
- Protesters
- Proto-Industry
- Protocol of Peace
- Protopopov, Alexander Dmitrievich
- Proudhon, Pierre-Joseph
- Providence, R.I.
- provincial council of church
- Provincial Government
- Provincial Military Organizations
- Prudence Crandall
- Prudhomme, Sully
- Prussia and the American Revolution
- Pruth River, Campaign and Treaty of
- Pskov Judicial Charter
- Psychiatry, Military
- Psychology