MLA

Bird, William, 1888-1963. Passport. Box 3, folder 131. 1919 Jul. https://collections.library.yale.edu/catalog/2030450.

APA, 6th edition

Bird, William, 1888-1963. (["Box 3, folder 131"])(1919 Jul)[Passport]. https://collections.library.yale.edu/catalog/2030450.