The following publications contain information about Jacob Hetler:
Article: "Hey! You Injun Fighters, Jake Hetler's in Town Hunting Former Buddies" • Plain Dealer • Cleveland, Ohio • 7 January 1922 • Page 15.
Article: "Veteran of Great War Recalls Stirring Day" • News-Journal • Manfield, Ohio • 15 December 1930 • Page 3.
Article: "Indian Fighter Is 80 Years Old: Jacob Hetler Celebrates By Mingling With Comrades" • News-Journal • Manfield, Ohio • 2 August 1932 • Page 2.
Article: "Veteran Marks 81st Birthday: Jacob Hetler, Once in Custer's Army, Celebrates With 'Old Cronies'" • News-Journal • Manfield, Ohio • 2 August 1933 • Page 2.
Article: "Mansfielder Who Served With Custer Recalls Indian Fighter's Last Stand" • It's Anniversary Today of Massacre That He Just Escaped. Jacob Helter Recalls Bit of Luck That Saved His Life. • News-Journal • Manfield, Ohio • 25 June 1934 • Page 1.
Column: "Up and Down the Street" • News-Journal • Manfield, Ohio • 11 March 1936 • Page 9.
Article: "Vets Prepare for Reunion of Sherman Brigade Sunday: Four Civil War Soldiers at McLaughlin Camp Meeting—Three Confined to Homes by Illness." • News-Journal • Manfield, Ohio • 17 August 1936 • Page 3.