Cite

Grinnell, George Bird to [LBA?]

MLA

Audubon, John James, 1785-1851. Grinnell, George Bird to [LBA?]. Box 4, folder 167. 1874 Mar 9. https://collections.library.yale.edu/catalog/32313161.

APA, 6th edition

Audubon, John James, 1785-1851. (["Box 4, folder 167"])(1874 Mar 9)[Grinnell, George Bird to [LBA?]]. https://collections.library.yale.edu/catalog/32313161.