MLA

Brady, Mathew B., approximately 1823-1896. Bright, William. Box 37, folder 1840. 1849-circa 1956. https://collections.library.yale.edu/catalog/33109409.

APA, 6th edition

Brady, Mathew B., approximately 1823-1896. (["Box 37, folder 1840"])(1849-circa 1956)[Bright, William]. https://collections.library.yale.edu/catalog/33109409.