Encyclopedias, Almanacs, Transcripts, and Maps
- Diancecht
- Diaphane
- Diarrhea Diet
- Diastrophic dysplasia
- Diastrophic Dysplasia
- Dicaearchus
- Dichloralphenazone
- Dichloralphenazone, Isometheptene, and Acetaminophen
- Dick Rutan
- Dick Rutan and Jeana Yeager Pilot the First Aircraft to Fly around the World Nonstop
- Dickhoff, Robert Ernest
- Dickinson, Edmund (1624-1707)
- Didier Brothers, Alexis & Adolph (mid-nineteenth century)
- Didot Perceval
- Diego de Velásquez
- Dielectric Materials
- Dielectric Materials
- Diepenbrock, Melchior von (1798-1854)
- Diet and Nutrition
- Diet Drugs