MLA

Knott, Frederick (1916-2002). Miscellaneous. Box 43, folder 350-354. undated. https://collections.library.yale.edu/catalog/16600385.

APA, 6th edition

Knott, Frederick (1916-2002). (["Box 43, folder 350-354"])(undated)[Miscellaneous]. https://collections.library.yale.edu/catalog/16600385.