Subject
- Piano music1
- Piantadosi, Al, 1884-1955--Portraits1
- Pneumonia2
- Popular music23
- Popular music--1911-192031
- Popular music--United States34
- Popular music--United States--1911-192078
- Popular music--United States--1921-19301
- Postal money orders1
- Postcards3
- Postcards--Collectors and collecting2
- Practical jokes1
- Prayer2
- Prohibition--Songs and music2
- Psalters--France--Illustrations2
- Ragtime music1
- Railroad trains1
- Raincoats2
- Red Cross and Red Crescent1
- Rhine River--Songs and music1