Cite

Edgar Cox posed sitting in a chair and Alice Handy Cox in the background

MLA

Brady, Mathew B., approximately 1823-1896. Edgar Cox posed sitting in a chair and Alice Handy Cox in the background. Box 37, folder 1833. 1849-circa 1956. https://collections.library.yale.edu/catalog/33109396.

APA, 6th edition

Brady, Mathew B., approximately 1823-1896. (["Box 37, folder 1833"])(1849-circa 1956)[Edgar Cox posed sitting in a chair and Alice Handy Cox in the background]. https://collections.library.yale.edu/catalog/33109396.