Encyclopedias, Almanacs, Transcripts, and Maps
- Perry, Michael C(harles) (1933-)
- Persia Expands the Boundaries of Empire, Exploration, and Organization
- Personal Music Players
- Personality Type Diet
- Personation
- Perspective Analysis
- Perty, Maximilian (ca. 1861)
- Peruvian Ice Maiden
- Pessomancy (or Psephomancy)
- Pests
- Pests
- Petechial Hemorrhage
- Peter Apian
- Peter Artedi
- Peter C. Schultz
- Peter Chamberlen, the Elder
- Peter Collinson
- Peter Cooper Hewitt
- Peter Funch
- Peter Guthrie Tait