MLA

Rudge, Olga, 1895-1996. Notebooks. Box 13, folder 514. n.d.. https://collections.library.yale.edu/catalog/17082110.

APA, 6th edition

Rudge, Olga, 1895-1996. (["Box 13, folder 514"])(n.d.)[Notebooks]. https://collections.library.yale.edu/catalog/17082110.