MLA

Jordan, Viola Baxter, 1887-1973. Bryher. Box 1, folder 9-11. 1944. https://collections.library.yale.edu/catalog/2036366.

APA, 6th edition

Jordan, Viola Baxter, 1887-1973. (["Box 1, folder 9-11"])(1944)[Bryher]. https://collections.library.yale.edu/catalog/2036366.