- Charles V, Holy Roman Emperor, 1500-15581
- Chemical industry1
- Church history1
- Clove trade1
- Clusius, Carolus, 1526-16091
- Colonies--Administration1
- Correspondence (Namık Kemal)1
- Cosimo I, Grand-Duke of Tuscany, 1519-15741
- Cotton trade1
- Courts and courtiers1
- Criticism and interpretation1
- Criticism, Textual1
- Criticism, interpretation, etc.1
- Della Rovere, Francesco Maria, duca d'Urbino, 1548-16311
- Dervishes1
- Diplomatic documents1
- Dodoens, Rembert, 1517-15851
- Eleonora, di Toledo, Duchess, consort of Cosimo I, Grand-Duke of Tuscany, 1522-15621
- Elizabeth I, Queen of England, 1533-16031
- England1