Cite

[?], Earnest. "Ku." #56

MLA

DeHuff, Elizabeth Willis, 1886-1983. [?], Earnest. "Ku." #56. Box 12, folder 144. [circa 1917]. https://collections.library.yale.edu/catalog/2039485.

APA, 6th edition

DeHuff, Elizabeth Willis, 1886-1983. (["Box 12, folder 144"])([circa 1917])[[?], Earnest. "Ku." #56]. https://collections.library.yale.edu/catalog/2039485.