MLA

Brady, Mathew B., approximately 1823-1896. Kendall, George. Box 38, folder 1878. 1849-circa 1956. https://collections.library.yale.edu/catalog/33109469.

APA, 6th edition

Brady, Mathew B., approximately 1823-1896. (["Box 38, folder 1878"])(1849-circa 1956)[Kendall, George]. https://collections.library.yale.edu/catalog/33109469.