Setting copy
MLA
Pound, Ezra, 1885-1972. Setting copy. Box 98, folder 4170. n.d.. https://collections.library.yale.edu/catalog/2030449.
APA, 6th edition
Pound, Ezra, 1885-1972. (["Box 98, folder 4170"])(n.d.)[Setting copy]. https://collections.library.yale.edu/catalog/2030449.