MLA

Pound, Ezra, 1885-1972. Bravo, Roosevelt!: typescript. Box 69, folder 3067. [1936]. https://collections.library.yale.edu/catalog/17122658.

APA, 6th edition

Pound, Ezra, 1885-1972. (["Box 69, folder 3067"])([1936])[Bravo, Roosevelt!: typescript]. https://collections.library.yale.edu/catalog/17122658.