Cite

Vaughn, John, Philadelphia, to Peter Parker

MLA

Parker, Peter, 1804-1888. Vaughn, John, Philadelphia, to Peter Parker. 1841 September 12. https://collections.library.yale.edu/catalog/16808685.

APA, 6th edition

Parker, Peter, 1804-1888. (1841 September 12)[Vaughn, John, Philadelphia, to Peter Parker]. https://collections.library.yale.edu/catalog/16808685.