MLA

Himes, Chester B., 1909-1984. Impressions of Europe. Box 7, folder 82. 1954 March 1. https://collections.library.yale.edu/catalog/16747700.

APA, 6th edition

Himes, Chester B., 1909-1984. (["Box 7, folder 82"])(1954 March 1)[Impressions of Europe]. https://collections.library.yale.edu/catalog/16747700.