MLA

Mason, John T., b. 1822. Tintype of an unidentified man. Box 2 | Folder 13. n.d.. https://collections.library.yale.edu/catalog/16597819.

APA, 6th edition

Mason, John T., b. 1822. (["Box 2 | Folder 13"])(n.d.)[Tintype of an unidentified man]. https://collections.library.yale.edu/catalog/16597819.