Cite

Letter, I have returned the paper...

MLA

Eliot, George, 1819-1880. Letter, I have returned the paper.... Box 7. 1859 Sep 24. https://collections.library.yale.edu/catalog/16892612.

APA, 6th edition

Eliot, George, 1819-1880. (["Box 7"])(1859 Sep 24)[Letter, I have returned the paper...]. https://collections.library.yale.edu/catalog/16892612.