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.
Uploaded a work by Unknown from https://digital.sciencehistory.org/works/8k71nh19d Cite as: “Portrait of James A. Rafferty (1886-1951),” 1940–1949. Williams Haynes Portrait Collection, Box 12. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/8k71nh19d. with UploadWizard