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.
Leaf: This image or file was extracted from a baseball card produced by Leaf International. According to the United States Copyright Office, copyrights belonging to Leaf International were not renewed within the required period for filing. Thus, all baseball cards printed by Leaf International before 1964 have lapsed into the public domain and are free for use.
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Hal Newhouser, pitcher with the Detroit Tigers, image from the 1948 Leaf baseball card.