MLA

Wright, Richard, 1908-1960. Padmore, George. Box 103, folder 1522. 1946-59. https://collections.library.yale.edu/catalog/10102222.

APA, 6th edition

Wright, Richard, 1908-1960. (["Box 103, folder 1522"])(1946-59)[Padmore, George]. https://collections.library.yale.edu/catalog/10102222.