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.
{{Information |description= Lafayette Radio Electronics, headquarters staff QSL card |source=personal collection |date=March 1, 2018 |author= Lafayette Radio Electronics, 1962 |permission= PD-US-no notice |other versions= }} {{PD-US-no notice}} {{PD-because|Published in the US before 1978 without a copyright notice}}