PD-US (licensing information : [1]) - no copyright notice (see source)
Copyright not renewed
Searches were done in both film and artwork categories for the years 1959 and 1960. There were no renewals for this title in the motion picture category. There's no evidence of renewal for the film or any material related to it.
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 (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.