This factsheet discusses the sacredness of the buffalo to the Great Plains Indigenous peoples and the attempted colonial Buffalo Genocide.
Gast, John. American Progress. Autry Museum of the American West, 1872, https://en.wikipedia.org/wiki/American_Progress.
Hubbard, T. (2014). Buffalo Genocide in Nineteenth-Century North America: Kill, Skin, and Sell. In Andrew Woodford, Jeff Benvenuto & Alexander Laban Hinton (Eds.), Colonial Genocide in Indigenous North America (pp. 292-305). Duke University Press. https://doi.org/10.2307/j.ctv11sn770.17.
Standing Rock Protestors Report Wild Buffalo Sighting. Snopes. 28, Oct. 2016, https://www.snopes.com/news/2016/10/28/standing-rock-buffalo-sighting/.