MLA

Bates, Charles Francis, 1862-1944. Portraits. Box 23, folder 341-42. [1860s], n.d.. https://collections.library.yale.edu/catalog/2019708.

APA, 6th edition

Bates, Charles Francis, 1862-1944. (["Box 23, folder 341-42"])([1860s], n.d.)[Portraits]. https://collections.library.yale.edu/catalog/2019708.