Subjects: Correspondance (sorted alphabetically by title)
- Carvalhal, Alvaro do -- Correspondence
- Castelo Branco, António de Azevedo -- Correspondence
- Catherine, of Siena, Saint, 1347-1380 -- Correspondence
- Chantal, Jeanne-Françoise de, Saint, 1572-1641 -- Correspondence
- Chekhov, Anton Pavlovich, 1860-1904 -- Correspondence
- Chevalier, Michel, 1806-1879 -- Correspondence
- Children -- France -- Correspondence
- Children -- United States -- Correspondence
- Christian women saints -- Italy -- Siena -- Correspondence
- Church, J. (John), approximately 1780-approximately 1825 -- Correspondence
- Church of England -- Clergy -- Correspondence
- Church of England -- England -- Clergy -- Correspondence
- Cibber, Colley, 1671-1757 -- Correspondence
- Cicero, Marcus Tullius -- Correspondence
- Clergy -- England -- Correspondence
- Clough, Arthur Hugh, 1819-1861 -- Correspondence
- Coleridge, Samuel Taylor, 1772-1834 -- Correspondence
- Colvin, Sidney, 1845-1927 -- Correspondence
- Commercial correspondence
- Commercial correspondence, Spanish
- Communists -- Germany -- Correspondence
- Composers -- Austria -- Correspondence
- Composers, Black -- England -- London -- Correspondence
- Composers -- France -- Correspondence
- Composers -- Germany -- Correspondence