Noah Porter (Yale 1831) letter to his brother
MLA
Goel, Ravi D. Noah Porter (Yale 1831) Letter to His Brother. 0AD. https://collections.library.yale.edu/catalog/15603825.
APA, 6th edition
Goel, R. D. (0 C.E.). Noah Porter (Yale 1831) letter to his brother. https://collections.library.yale.edu/catalog/15603825.