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.
James Gregory (1911-2002) Screenshot from "The Things People Want" (1948), an educational film in the public domain. Source: http://www.archive.org/details/ThingsPe1948 {{PD-because|this is a screenshot taken from a movie in the public domain}}