- Collault, Étienne, active 1512-15451
- Colleoni, Bartolomeo, 1400-14751
- Collégiale Saint-Vincent de Soignies--History--Sources1
- Colombino, Giorgio di1
- Colonies1
- Colonies--Administration1
- Colors1
- Columbus, Christopher1
- Comedies1
- Commandments, Six hundred and thirteen1
- Commercial law1
- Communion of saints in the liturgy1
- Compendium theologicae veritatis (Hugo, Argentinensis)1
- Compilation manuscripts1
- Compositor's copy1
- Concini, Alessandra Antinori1
- Concini, Arrigo1
- Concini, Bernardo1
- Concini, Lucrezia1
- Confessors1