- Authors, American -- 20th century -- Correspondence -- Drama
- Vietnam War, 1961-1975 + Veterans -- United States -- Correspondence
- Williams, Marie, 1885-1931 -- Correspondence
- Empresses -- France -- Correspondence
- Couples -- United States -- Correspondence
- Hanff, Helene -- Correspondence
- Gogh, Vincent van, 1853-1890 -- Correspondence -- Juvenile literature
- Hauerwas, Stanley, 1940- -- Correspondence
- Poitier, Sidney -- Correspondence
- Rock musicians -- England -- Correspondence
- Onassis, Jacqueline Kennedy, 1929-1994 -- Correspondence
- Bradbury, Ray, 1920-2012 -- Correspondence
- Goodall, Jane, 1934- -- Correspondence
- Tyson, Neil deGrasse -- Correspondence
- Lamson, Roswell Hawks -- Correspondence
- Alexander, Eileen, 1917-1986 -- Correspondence
- Serial murderers -- Correspondence
- Novelists, English -- 20th century -- Correspondence
- Lebarie, Ayele, 2005- -- Correspondence
- Johnson, Joyce, 1935- -- Correspondence
- Emperors -- France -- Correspondence
- United States, Navy -- Officers -- Correspondence
- Mothers and sons -- United States -- Correspondence
- Children -- Correspondence -- Juvenile literature
- Leonard, Daniel, 1740-1829 -- Correspondence
- Vanderbilt, Gloria, 1924-2019 -- Correspondence
- Women novelists, English -- 20th century -- Correspondence
- Alcott, Abba May, 1800-1877 -- Correspondence
- Lax, Robert -- Correspondence
- Authors -- Correspondence
- Davis, Eliza -- Correspondence -- Juvenile literature
- Mowat, Farley -- Correspondence
- Political activists -- Correspondence
- Fitzgerald, F. Scott, Francis Scott, 1896-1940 -- Correspondence
- Ciaglia, Anthony -- Correspondence
- Freeman, Dorothy, 1898-1978 -- Correspondence
- Authors, French -- 19th century -- Correspondence
- Trappists -- United States -- Correspondence
- Roosevelt, Theodore, 1858-1919 -- Correspondence
- Soldiers -- Massachusetts -- Correspondence
- Adams, Abigail, 1744-1818 -- Correspondence
- Alifirenka, Caitlin -- Correspondence
- Le Carré, John, 1931-2020 -- Correspondence
- Cartoonists -- United States -- Correspondence
- Presidents' spouses -- United States -- Correspondence -- Fiction
- T͡Svetaeva, Marina, 1892-1941 -- Correspondence
- Rilke, Rainer Maria, 1875-1926 -- Correspondence
- Booksellers and bookselling -- Great Britain -- Correspondence -- Drama
- Undset, Sigrid, 1882-1949 -- Correspondence
- Political scientists -- Germany -- Correspondence