Wilson, Douglas L., ed.; Davis, Rodney O., ed.; Greene, William G. 'Introduction' 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=herndonr13.html

Note from page xxii: 31. The substance of oral history may be defined as testimony about events and situations that occurred during the lifetime of the informants. See Jan Vansina, Oral Tradition as History (Madison: University of Wisconsin Press, 1985), 12.