Lot of four from a set of six Indian chiefs portrayed on 7/8" pinback buttons from the sponsor "American Pepsin Gum Co." whose name appears on the backpaper of each button. Set was issued with red or blue text. These four are red versions (see next rare set). Includes Rushing Bear Pawnee, Lean Wolf Gros Ventres, Spotted Tail and Black Eye, both Blackfeet Sioux. Cream bkgs. lightly toned but no stain. VF.