MLA

Koch, Frederick R. (Frederick Robinson). Vandini, Alfredo. Box 50, folder 1066. n.d.. https://collections.library.yale.edu/catalog/16101639.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 50, folder 1066"])(n.d.)[Vandini, Alfredo]. https://collections.library.yale.edu/catalog/16101639.