- C.G. Jung Center (New York, N.Y.).--Kristine Mann Library--Ownership1
- Cambridge.--University.--Library--Stamp1
- Canal Bank1
- Canonici, Matteo Luigi,--1727-1805--Ms. notes.1
- Capelli, Ferdinandi--Autograph1
- Carlisle, Charles Howard, 1st earl of, 1629-16851
- Carnarvon, Henry Howard Molyneux, Earl of, 1831-18901
- Caroline, Queen, consort of George IV, King of Great Britain, 1768-18211
- Castagni, Michelangelo di Bernardino1
- Catholic Church --Controversial literature1
- Catholic Church--Doctrinal and controversial works--Catholic authors.1
- Cawdrey, Zachary,--1616-1684.--Preparation for martyrdom1
- Charles I, King of England, 1600-16491
- Chitty, Thomas1
- City of London (England). Court of Aldermen -- Early works to 1800.1
- City of London (England). Court of Common Council -- Early works to 18001
- Cleveland, Barbara Villiers Palmer, Duchess of, 1641-17092
- Cobra (Association)1
- Coleridge, Samuel Taylor, 1772-18342
- Coleridge, Samuel Taylor, 1772-1834.15