Cite

PEN (Organization)

MLA

Pearson, Norman Holmes, 1909-1975. PEN (Organization). Box 89. 1949-1952. https://collections.library.yale.edu/catalog/17260078.

APA, 6th edition

Pearson, Norman Holmes, 1909-1975. (["Box 89"])(1949-1952)[PEN (Organization)]. https://collections.library.yale.edu/catalog/17260078.