MLA

Barrie, J. M. (James Matthew), 1860-1937. Indenture. Box 54, folder 1121. 1937 June 10. https://collections.library.yale.edu/catalog/2008319.

APA, 6th edition

Barrie, J. M. (James Matthew), 1860-1937. (["Box 54, folder 1121"])(1937 June 10)[Indenture]. https://collections.library.yale.edu/catalog/2008319.