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 C. A. Miller, author. Association of Interstate Commerce Practitioners (Washington, DC), publisher. from [https://babel.hathitrust.org/cgi/pt?id=mdp.39015035051781&view=1up&seq=42 "The Lives of the Interstate Commerce Commissioners and the Commission's Secretaries". 1946. After page 22. Via Hathi Trust. with UploadWizard