- Roosevelt family -- Correspondence
- Japanese American children -- Correspondence
- Thurber, James, 1894-1961 -- Correspondence
- Ginsberg, Allen, 1926-1997 -- Correspondence
- Dickens, Charles, 1812-1870 -- Correspondence
- Vonnegut, Kurt -- Correspondence
- Davis, Eliza -- Correspondence
- Married people -- Correspondence
- Alexander, Boyd, 1873-1910 -- Correspondence
- Tyson, Neil deGrasse -- Correspondence
- Wilder, Laura Ingalls, 1867-1957 -- Correspondence
- Presidents' spouses -- Correspondence
- Douglas, Anne -- Correspondence
- Couples -- Correspondence
- Humorists -- Correspondence
- Women -- Correspondence
- Country musicians -- Correspondence
- Political prisoners -- Russia (Federation) -- Pechora (Komi) -- Correspondence
- Dodd, Thomas J., Thomas Joseph, 1907-1971 -- Correspondence
- O'Keeffe, Georgia, 1887-1986 -- Correspondence
- Authors, German -- 20th century -- Correspondence
- Novelists, English -- 19th century -- Correspondence
- De Voto, Avis -- Correspondence
- Cartoonists -- Correspondence
- Humorists, American -- 20th century -- Correspondence
- Pagel, Clara, 1896-1955 -- Correspondence
- Hanff, Helene -- Correspondence
- Soldiers -- Correspondence
- Kirschner, Sala Garncarz, 1924- -- Correspondence
- Temple, O., Olive, 1880-1936 -- Correspondence
- Hoffman, Bertha Marie Heidtmann, 1875-1965 -- Correspondence
- Presidents -- Correspondence
- Rilke, Rainer Maria, 1875-1926 -- Correspondence
- Hughes, Langston, 1902-1967 -- Correspondence
- Kerouac, Jack, 1922-1969 -- Correspondence
- Skinner, Roger -- Correspondence
- Authors, American -- 20th century -- Correspondence
- Soldiers -- Wisconsin -- Correspondence
- Juliet (Fictitious character) -- Correspondence
- Galilei, Maria Celeste, 1600-1634 -- Correspondence
- Stieglitz, Alfred, 1864-1946 -- Correspondence
- German Americans -- Wisconsin -- Correspondence
- Fisher, Murray William, 1921- -- Correspondence
- Political activists -- Correspondence
- Astrophysicists -- Correspondence
- Cash, Vivian, 1934-2005 -- Correspondence
- Children -- Correspondence