MLA

Simpson, James Young, Sir (1811-1870), Thoms, Herbert (1885-1972). Simpson's forceps. Box 047. 19th century. https://collections.library.yale.edu/catalog/17322096.

APA, 6th edition

Simpson, James Young, Sir (1811-1870), & Thoms, Herbert (1885-1972). (["Box 047"])(19th century)[Simpson's forceps]. https://collections.library.yale.edu/catalog/17322096.