Patriotic Gore: Studies in the Literature of the American Civil War. ISBN 978-0-393-31256-0. (Ch. IV. "Northern Soldiers: Ulysses S. Grant")
Zimmerman, Jonathan (November 12, 2010). "Why should we pay our ex-presidents?". Chicago Tribune. Retrieved November 23, 2016.
"General Ulysses S. Grant Memorial, (sculpture)". Collections Search Center. Smithsonian Institution. 2014.
"The Brink of Extinction – and recovery". Bison Ecology. National Park Service, Yellowstone National Park. Retrieved December 26, 2016.
"Ulysses S. Grant Memorial". U.S. Government: Capitol Visiting Center. Retrieved June 27, 2016.
Killanin, Baron Michael Morris; Duignan, Michael V. (1989). The Shell Guide to Ireland. Park West, Dublin, Ireland: Gill and Macmillan. p. 62. ISBN 978-0-7171-1595-2 – via Google Books.
"Ulster-Scots and the United States Presidents" (PDF). Ulster-Scots Agency. p. 3. Retrieved July 12, 2010.
Heffernan, David (August 6, 2021). "Ulysses S. Grant – Civil War General & President Documentary". Youtube. Archived from the original on September 16, 2021. Retrieved September 15, 2021.{{cite web}}:  CS1 maint: bot: original URL status unknown (link)
Farley, Robert (September 20, 2021). "Why too many historians look down on Ulysses S. Grant". Insider. Retrieved September 23, 2021.
Little, Becky (August 31, 2018). "How the Cult of Robert E. Lee Was Born". history.com. History. 