The following publications contain information about William Jackson:
Article: "Was with Custer: The Only Surviving Scout of the Ill-Starred Expedition" • The Anaconda Standard • Anaconda, Montana • May 31, 1898 • Page 11.
Article: "Spray of the Falls" • Great Falls Tribune • Great Falls, Montana • May 31, 1898 • Page 3.
Article: "Was with Reno in Custer's Last Fight: The Story of Government Scout William Jackson, the First Man to Visit the Scene of the Little Big Horn Massacre Where the Gallant Custer Fell" • The Anaconda Standard • Anaconda, Montana • June 19, 1898 • Page 15.
Article: "Winchester Jack's Double: An Incident in the Life of Scout William Jackson" • Great Falls Daily Tribune • December 17, 1899 • Page 8.
Article: "Faces, Features, Memorabilia" • A look at Sgt. Charles White, Lt. Edward J. McClernand, scout William Jackson and Capt. Henry James Nowlan. • Greasy Grass, Journal of the Custer Battlefield Historical & Museum Association, Vol. 15, May 1999.
Article: "Fred Girard: A Real Custer Scout" • Girard's premature death in 1925 deprived Walter M. Camp of the opportunity to write Girard's definitive account of the Little Big Horn. A 1914 newspaper article provides a glimpse into what he might have said. • Greasy Grass, Journal of the Custer Battlefield Historical & Museum Association, Vol. 17, May 2001.
Article: "See How an Individual Scout Survived the Massacre at Little Bighorn" by Logan Ney • https://www.wearethemighty.com/history/individual-scout-survived-little-bighorn • February 19, 2019.