- Businesspeople -- United States -- Correspondence
- Dickens, Charles, 1812-1870 -- Correspondence
- Vonnegut, Kurt -- Correspondence
- Benjamin, Walter, 1892-1940 -- Correspondence
- Vettese, Maria Alexandra -- Correspondence
- Astrophysicists -- United States -- Correspondence
- Thurber, James, 1894-1961 -- Correspondence
- Ginsberg, Allen, 1926-1997 -- Correspondence
- Authors, American -- 19th century -- Correspondence
- Gottlieb, Daniel, 1946- -- Correspondence
- Authors, English -- Correspondence
- Cooks -- United States -- Correspondence
- Kennedy, Joseph P., Joseph Patrick, 1888-1969 -- Correspondence
- Authors, English -- 18th century -- Correspondence
- Drama teachers -- Correspondence
- Bishop, Elizabeth, 1911-1979 -- Correspondence
- Humorists, American -- 20th century -- Correspondence
- Japanese American children -- Correspondence -- Juvenile literature
- Queens -- Great Britain -- Correspondence
- Ellison, Ralph -- Correspondence
- Bukowski, Charles -- Correspondence
- Married people -- United States -- Correspondence
- Constable, John, 1776-1837 -- Correspondence
- Mothers -- United States -- Correspondence
- Bahlmann, Anna Catherine, 1849-1916 -- Correspondence
- Adams, John, 1735-1826 -- Correspondence
- Authors, Danish -- 20th century -- Correspondence
- Lowell, Robert, 1917-1977 -- Correspondence
- Child, Julia -- Correspondence
- DeVoto, Avis -- Correspondence
- Jews -- Poland -- Correspondence -- Fiction
- Feminists -- United States -- Correspondence
- Puritans -- Rhode Island -- Correspondence
- Grandfathers -- Correspondence
- Artists -- Netherlands -- Correspondence
- Physicists -- United States -- Correspondence
- Lévy, Bernard-Henri -- Correspondence
- Dickinson, Emily, 1830-1886 -- Correspondence
- Jews -- United States -- Correspondence
- Poets, American -- 20th century -- Correspondence
- Dostoyevsky, Fyodor, 1821-1881 -- Correspondence
- Artists -- United States -- Correspondence
- Gogh, Wil van, 1862-1941 -- Correspondence
- Historians -- United States -- Correspondence
- Lesbians -- United States -- Correspondence
- Browning, Elizabeth Barrett, 1806-1861 -- Correspondence
- Women biologists -- Correspondence
- Abolitionists -- United States -- Correspondence
- Ritvo, Max, 1990-2016 -- Correspondence
- Soldiers -- United States -- Correspondence