MLA

Jordan, Viola Baxter, 1887-1973. Pound, Ezra. Box 3, folder 86-89. 1949. https://collections.library.yale.edu/catalog/2038071.

APA, 6th edition

Jordan, Viola Baxter, 1887-1973. (["Box 3, folder 86-89"])(1949)[Pound, Ezra]. https://collections.library.yale.edu/catalog/2038071.