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.
The original description page was here. All following user names refer to en.wikipedia.
2005-12-29 23:54 Lar 2692×420× (424342 bytes) From the Library of Congress Panorama collection. [http://memory.loc.gov/cgi-bin/query/I?pan:3:./temp/~ammem_2hCj::displayType=1:m856sd=pan:m856sf=6a28300:@@@] illustrates Chicago Century of Progress fair site, 1933-1934