MLA

Jordan, Viola Baxter, 1887-1973. Rudge, Olga. Box 3, folder 93. 1948-49. https://collections.library.yale.edu/catalog/2038139.

APA, 6th edition

Jordan, Viola Baxter, 1887-1973. (["Box 3, folder 93"])(1948-49)[Rudge, Olga]. https://collections.library.yale.edu/catalog/2038139.