The following publication contains information about Red Hawk:
Article: "Redskins in the White House" by Jay F. Kay • Golden West • Vol. 1, No. 3 • March 1965.
Photograph: "Red Hawk and his Horse" • Buyenlarge/Getty Images • https://www.earth.com/image/red-hawk-and-his-horse • Accessed January 20, 2022.