Cite

[Untitled folder, "undated from 1839"]

MLA

Sterling, John, 1806-1844. [Untitled folder, "undated from 1839"]. Box 1 | Folder 6. [1839]. https://collections.library.yale.edu/catalog/16684587.

APA, 6th edition

Sterling, John, 1806-1844. (["Box 1 | Folder 6"])([1839])[[Untitled folder, "undated from 1839"]]. https://collections.library.yale.edu/catalog/16684587.