Cite

Hopkins, Samuel M., autograph letter, signed, Paris, France

MLA

Barlow, Joel, 1754-1812. Hopkins, Samuel M., autograph letter, signed, Paris, France. Box 1, folder 12. 1798 July 17. https://collections.library.yale.edu/catalog/17426032.

APA, 6th edition

Barlow, Joel, 1754-1812. (["Box 1, folder 12"])(1798 July 17)[Hopkins, Samuel M., autograph letter, signed, Paris, France]. https://collections.library.yale.edu/catalog/17426032.