Edward Hitchcock letter to unidentified recipient

Chicago citation style
Hitchcock, Edward, 1793-1864. Edward Hitchcock letter to unidentified recipient. 1862. Retrieved from the Digital Public Library of America, http://acdc.amherst.edu/view/asc:76429. (Accessed July 18, 2018.)
APA citation style
Hitchcock, Edward, 1793-1864, (1862) Edward Hitchcock letter to unidentified recipient. Retrieved from the Digital Public Library of America, http://acdc.amherst.edu/view/asc:76429
MLA citation style
Hitchcock, Edward, 1793-1864. Retrieved from the Digital Public Library of America <http://acdc.amherst.edu/view/asc:76429>.
Note: These citations are programmatically generated and may be incomplete.