MLA

Hawthorne, Nathaniel, 1804-1864. Howitt, Mary. Box 2, folder 44. [1854 May 14]. https://collections.library.yale.edu/catalog/2064559.

APA, 6th edition

Hawthorne, Nathaniel, 1804-1864. (["Box 2, folder 44"])([1854 May 14])[Howitt, Mary]. https://collections.library.yale.edu/catalog/2064559.