Geer, John G.; Rochon, Thomas R. (1993). "William Jennings Bryan on the Yellow Brick Road". The Journal of American Culture. 16 (4): 59–63. doi:10.1111/j.1542-734X.1993.00059.x.
source Joseph Keppler in Puck (magazine) September 19, 1906; reprinted in: Smylie, James H. "William Jennings Bryan and the Cartoonists: A Pictorial Lampoon, 1896—1925". Journal of Presbyterian History 53.2 (1975): 83–92 at p 88 online.
"William Jennings Bryan, 1860-1925". Nebraska State Historical Society. November 30, 2006. Archived from the original on December 6, 2006. Retrieved June 27, 2023.