MLA

Granger, Lester B. (Lester Blackwell), 1896-1976. Correspondence. Box 4, folder 85-87. 1943-1969. https://collections.library.yale.edu/catalog/16750189.

APA, 6th edition

Granger, Lester B. (Lester Blackwell), 1896-1976. (["Box 4, folder 85-87"])(1943-1969)[Correspondence]. https://collections.library.yale.edu/catalog/16750189.