Letters
MLA
Eaker, John P., d. 1914. Letters. Box 1 | Folder 1. 1890. https://collections.library.yale.edu/catalog/16712270.
APA, 6th edition
Eaker, John P., d. 1914. (["Box 1 | Folder 1"])(1890)[Letters]. https://collections.library.yale.edu/catalog/16712270.