Cite

"A Pablo," [holograph on letter from insurance company]

MLA

Stein, Gertrude, 1874-1946. "A Pablo," [holograph on letter from insurance company]. Box 86, folder 1590. 1935 Dec 17. https://collections.library.yale.edu/catalog/17105719.

APA, 6th edition

Stein, Gertrude, 1874-1946. (["Box 86, folder 1590"])(1935 Dec 17)["A Pablo," [holograph on letter from insurance company]]. https://collections.library.yale.edu/catalog/17105719.