MLA

Forsyth, James W. (James William), 1836-1906. Columbus, Ohio. Box 5, folder 94. 1862, n.d.. https://collections.library.yale.edu/catalog/2030413.

APA, 6th edition

Forsyth, James W. (James William), 1836-1906. (["Box 5, folder 94"])(1862, n.d.)[Columbus, Ohio]. https://collections.library.yale.edu/catalog/2030413.