MLA

Palmquist, Peter E. (1936-2003). Boston Railroad Photo Car. Box 351. circa 1840-2003. https://collections.library.yale.edu/catalog/16717655.

APA, 6th edition

Palmquist, Peter E. (1936-2003). (["Box 351"])(circa 1840-2003)[Boston Railroad Photo Car]. https://collections.library.yale.edu/catalog/16717655.