MLA

Josephson, Matthew, 1899-1978. Corcoran, Thomas. Box 3, folder 65. 1947-48. https://collections.library.yale.edu/catalog/32286720.

APA, 6th edition

Josephson, Matthew, 1899-1978. (["Box 3, folder 65"])(1947-48)[Corcoran, Thomas]. https://collections.library.yale.edu/catalog/32286720.