Places
- Ontario--History--War of 1812.1
- Oregon Territory--History.1
- Oregon Territory.1
- Palestine.1
- Panama--Foreign relations--United States.1
- Paris (France)1
- Paris, France.1
- Pennsylvania--History--Revolution, 1775-1783.1
- Pennsylvania--History--War of 1812.1
- Pennsylvania--Politics and government.1
- Peru (Viceroyalty)--History--17th century.1
- Peru (Viceroyalty)--History--18th century.1
- Peru (Viceroyalty)--Politics and government.1
- Peru--History--1548-1820.1
- Philadelphia (Pa.)--History--Revolution, 1775-1783.1
- Philadelphia (Pa.)--History--War of 1812.1
- Pittsburg (Pa.)1
- Pittsburgh (Pa.)1
- Pittsfield (Mass.)1
- Plymouth (Mass.)1