MLA

Wheeler, Monroe, 1899-1988. Acoustiguide text draft, typescript carbon, corrected. Box 209, folder 2527. n.d.. https://collections.library.yale.edu/catalog/17064464.

APA, 6th edition

Wheeler, Monroe, 1899-1988. (["Box 209, folder 2527"])(n.d.)[Acoustiguide text draft, typescript carbon, corrected]. https://collections.library.yale.edu/catalog/17064464.