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.
Japanese troops on Attu train with artillery sometime in 1943. Photograph later captured by US troops. [http://www.lib.washington.edu/specialcoll/findaids/docs/photosgraphics/AleutianIslandsinWWIIPHColl604.xml]
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