MLA

Van Name, Ralph Gibbs, 1877-1961. Pearson, Norman Holmes. Box 4, folder 102. 1942. https://collections.library.yale.edu/catalog/10257473.

APA, 6th edition

Van Name, Ralph Gibbs, 1877-1961. (["Box 4, folder 102"])(1942)[Pearson, Norman Holmes]. https://collections.library.yale.edu/catalog/10257473.