MLA

Williams, William Carlos, 1883-1963. Old Sturbridge Village. Box 17, folder 544. 1960. https://collections.library.yale.edu/catalog/17049521.

APA, 6th edition

Williams, William Carlos, 1883-1963. (["Box 17, folder 544"])(1960)[Old Sturbridge Village]. https://collections.library.yale.edu/catalog/17049521.