MLA

Linton, W. J. (William James), 1812-1897. Foxton, Frederick Joseph. Box 1, folder 48. 1854 January 3. https://collections.library.yale.edu/catalog/17327097.

APA, 6th edition

Linton, W. J. (William James), 1812-1897. (["Box 1, folder 48"])(1854 January 3)[Foxton, Frederick Joseph]. https://collections.library.yale.edu/catalog/17327097.