Edward Hitchcock letter to Benjamin Silliman, 1821 August 6

Chicago citation style
Hitchcock, Edward, 1793-1864. Edward Hitchcock letter to Benjamin Silliman, 1821 August 6. 1821-08-06. Retrieved from the Digital Public Library of America, http://acdc.amherst.edu/view/asc:46918. (Accessed July 21, 2018.)
APA citation style
Hitchcock, Edward, 1793-1864, (1821-08-06) Edward Hitchcock letter to Benjamin Silliman, 1821 August 6. Retrieved from the Digital Public Library of America, http://acdc.amherst.edu/view/asc:46918
MLA citation style
Hitchcock, Edward, 1793-1864. Retrieved from the Digital Public Library of America <http://acdc.amherst.edu/view/asc:46918>.
Note: These citations are programmatically generated and may be incomplete.