MLA

Mason, William Smith, 1866-. Resolution of Congress re Pennsylvania field officers. Box 61 (Oversize), folder 2277. 1777 November 12. https://collections.library.yale.edu/catalog/33490214.

APA, 6th edition

Mason, William Smith, 1866-. (["Box 61 (Oversize), folder 2277"])(1777 November 12)[Resolution of Congress re Pennsylvania field officers]. https://collections.library.yale.edu/catalog/33490214.