MLA

Palmquist, Peter E. (1936-2003). Willis and Hamilton. Box 95. 1901-2003. https://collections.library.yale.edu/catalog/33499826.

APA, 6th edition

Palmquist, Peter E. (1936-2003). (["Box 95"])(1901-2003)[Willis and Hamilton]. https://collections.library.yale.edu/catalog/33499826.