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.
Uploaded a work by Baltimore Sun from [https://www.ebay.com/itm/203490217913 TV Week Sun Baltimore July 10 1977 MISS USA Kimberly Tomes Universe Q1]; full paper (proof of publication without notice) [https://www.newspapers.com/image/372086568/ The Baltimore Sun 10 Jul 1977, Sun · Page 189] with UploadWizard