MLA

Yale College (1718-1887). Committee on Commemorating the Service of Yale Men in the Civil War. Minutes of meetings. Box 1, folder 1. 1865 June 21-July 22. https://collections.library.yale.edu/catalog/32605796.

APA, 6th edition

Yale College (1718-1887). Committee on Commemorating the Service of Yale Men in the Civil War. (["Box 1, folder 1"])(1865 June 21-July 22)[Minutes of meetings]. https://collections.library.yale.edu/catalog/32605796.