Archived from the original on April 8, 2016. Retrieved February 13, 2016.
—— (1991). The Papers of Ulysses S. Grant: October 1, 1867 – June 30, 1868. SIU Press. ISBN 978-0-8093-1693-9.
—— (2002). "Ulysses S. Grant".  In Graff, Henry (ed.). The Presidents: A Reference History (7th ed.). pp. 245–60. ISBN 978-0-684-80551-1.
Simpson, Brooks D. (2014) [2000]. Ulysses S. Grant: Triumph Over Adversity, 1822–1865. Boston, MA: Houghton Mifflin. ISBN 978-0-395-65994-6.
Smith, Jean Edward (2001). Grant. New York: Simon & Schuster. ISBN 978-0-684-84927-0.
Sproat, John G. (1974).  Woodward C. Vann (ed.). Responses of the Presidents to Charges of Misconduct. New York: Delacorte Press. pp. 163–76. ISBN 978-0-440-05923-3.
Taylor, M. Scott (December 2011). "Buffalo Hunt: International Trade and the Virtual Extinction of the North American Bison" (PDF). The American Economic Review. 101 (7): 3162–95. doi:10.1257/aer.101.7.3162. JSTOR 41408734. S2CID 154413490.
Waltmann, Henry G. (Winter 1971). "Circumstantial Reformer: President Grant & the Indian Problem". Arizona and the West. 13 (4): 323–42. JSTOR 40168089.
Wang, Xi (1997). The Trial of Democracy: Black Suffrage and Northern Republicans, 1860–1910. Athens: The University of Georgia Press. ISBN 978-0-8203-4206-1.
Ward, Geoffrey C. (2012). 