Wilson, Douglas L., ed.; Davis, Rodney O., ed.; Engle, William. 'William Engle to William H. Herndon' in 'Herndon's Informants: Letters, Interviews, and Statements About Abraham Lincoln' . Urbana: University of Illinois Press, 1998. [format: book], [genre: letter]. Permission: University of Illinois Press
Persistent link to this document: http://lincoln.lib.niu.edu/file.php?file=herndon032a.html

Note from page 32: 1. Donald, 174, cites the original manuscript of this letter in the Weik Papers, ISHL, not located.