OpisVincent lopez empire state building at night 1937 loc.jpg
English: Photo of the New York midtown skyline at night, c. 1937. The Empire State Building dominates the left-hand side of the frame; the unlit floors hint at the building's financial difficulties during this period. [1]
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.