- "Jennie" letter, 18641
- A. Eliza Crane letter, 18541
- Andrew P. Duggan letter, 18751
- Annie McNeil letter, 1870/18801
- Anson Du Puy Van Buren letters, 1863/19971
- Aquilla Matthews papers, 1925/19841
- Charlotte Ursula Zolotow papers, 1930/20131
- Conway D. Whittle letter, 18601
- Correspondence from Hatty to Agnes Bacon, 18411
- Emily Clemens Pearson letter, 18411
- Frank and Lark Smith family letters, 1969/19731
- Frederick H. Stady papers, 1940/19531
- Freya Stark letter, 19731
- George W. Erving letter, 18001
- Georgia O'Keeffe letter, 19551