English: Cover of Frank R. Adams western novel 'Arizona Feud', a paperback published by Dell books, July 1950 (date attributed to 'Dell Paperbacks 1942 to Mid-1962' by William H. Lyles, Greenwood Press). Cover Art by Bob Stanley.
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.