English: Poster for the 1933 film Sagebrush Trail.
The item has no copyright markings on it as can be seen in the links above. At lower left is a logo for the Tooker Litho Company--they printed 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.