MLA

Wilson, Edmund, 1895-1972. Edward MacDowell Medal. Box 204, folder 4971. 1964. https://collections.library.yale.edu/catalog/2005066.

APA, 6th edition

Wilson, Edmund, 1895-1972. (["Box 204, folder 4971"])(1964)[Edward MacDowell Medal]. https://collections.library.yale.edu/catalog/2005066.