English: Autographed photo of American animal collector Frank Buck, from Capturing Wild Elephants!, his souvenir booklet from Frank Buck's Jungleland at the 1939 New York World's Fair. The original booklet was copyright 1940 by Frank Buck, but Buck died in 1950 and the copyright was not renewed.
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.