MLA

Palmquist, Peter E. (1936-2003). Vance, Robert H.. Box 561 (Oversize). circa 1840-2003. https://collections.library.yale.edu/catalog/33569779.

APA, 6th edition

Palmquist, Peter E. (1936-2003). (["Box 561 (Oversize)"])(circa 1840-2003)[Vance, Robert H.]. https://collections.library.yale.edu/catalog/33569779.