- Ocean liners--United States--Pictorial works1
- Ohio--Maps1
- Ohio--Songs and music1
- Older people--Pictorial works1
- Paperboys--Pictorial works1
- Partiotic music1
- Patriotic music, AmericanWorld War, 1914-1918--Songs and music1
- Patriotic music--Canada1
- Patriotic music--United States--World War, 1914-1918--United States--Songs and music1
- Patriotism--Songs and music1
- Pershing, John J. (John Joseph) 1860-1948--Songs and music1
- Pershing, John J. John Joseph, 1860-1948--Songs and music1
- Pershing, John Jo. (John Joseph), 1860-1948--Portraits1
- Piano music (Blues)1
- Piantadosi, Al, 1884-1955--Portraits1
- Plattsburgh Barracks (N.Y.)--Songs and music1
- Political ballads and songs--United States1
- Popular Music1
- Popular music -- United States -- 1911-19201
- Popular music--1901-19101