Cite

Prospectus, printed, three copies

MLA

Audubon, John James, 1785-1851. Prospectus, printed, three copies. Box 8, folder 438. 1831. https://collections.library.yale.edu/catalog/17444351.

APA, 6th edition

Audubon, John James, 1785-1851. (["Box 8, folder 438"])(1831)[Prospectus, printed, three copies]. https://collections.library.yale.edu/catalog/17444351.