Cite

"Henry Varnum Poor": notes and typescript

MLA

Sergeant, Elizabeth Shepley, 1881-1965. "Henry Varnum Poor": notes and typescript. Box 11, folder 273. n.d.. https://collections.library.yale.edu/catalog/32471052.

APA, 6th edition

Sergeant, Elizabeth Shepley, 1881-1965. (["Box 11, folder 273"])(n.d.)["Henry Varnum Poor": notes and typescript]. https://collections.library.yale.edu/catalog/32471052.