MLA

Dickson, Frederick Stoever, 1850-1925. Dobson, Austin. Box 2, folder 36. 1912-16, n.d.. https://collections.library.yale.edu/catalog/16590811.

APA, 6th edition

Dickson, Frederick Stoever, 1850-1925. (["Box 2, folder 36"])(1912-16, n.d.)[Dobson, Austin]. https://collections.library.yale.edu/catalog/16590811.