MLA

Townshend, George Townshend, Marquis, 1724-1807. Cutt, Francis. Box 9. 1772 May 23. https://collections.library.yale.edu/catalog/16684976.

APA, 6th edition

Townshend, George Townshend, Marquis, 1724-1807. (["Box 9"])(1772 May 23)[Cutt, Francis]. https://collections.library.yale.edu/catalog/16684976.