MLA

Thayer, Scofield, 1889-1982. Eliot, Vivien. Box 31, folder 812-813. 1915-21. https://collections.library.yale.edu/catalog/17142311.

APA, 6th edition

Thayer, Scofield, 1889-1982. (["Box 31, folder 812-813"])(1915-21)[Eliot, Vivien]. https://collections.library.yale.edu/catalog/17142311.