The item has no copyright markings on it as can be seen in the links above. At lower right is Country of origin USA. At lower left is Morgan Litho Corp, Cleveland, O. and some very small numbers I can't make out-they probably refer to the printing of the poster.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
{{Non-free_use_rationale_poster | Article = Young Buffalo Bill | Use = Infobox <!-- ADDITIONAL INFORMATION --> | Name = Young Buffalo Bill | Distributor = |
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