- Della Rovere, Francesco Maria, duca d'Urbino, 1548-16311
- Despotism1
- Devotional literature, Latin (Medieval and modern)1
- Diaries1
- Digital images1
- Diocletian, Emperor of Rome, 245-3131
- Diplomatic and consular service, Venetian1
- Diplomatic documents1
- Diplomatic relations1
- Diplomats1
- Directories1
- Dispute resolution (Law)1
- Dodoens, Rembert, 1517-15851
- Dominical letters1
- Early maps1
- Earthquakes1
- Edward VI, King of England, 1537-15531
- Egypt--Alexandria1
- Electors (Kurfürsten)1
- Eleonora, di Toledo, Duchess, consort of Cosimo I, Grand-Duke of Tuscany, 1522-15621