DescriptionPowder Puff Derby participants in 1948.jpg
English: Powder Puff Derby participants in 1948. Group portrait of eight women pilots before they leave Palm Springs for 1948 Powder Puff Derby; Published caption: ALL SET -- Ready to leave Palm Springs Airport in a cross-country race to Miami are, from left, Mary Nelson, Jeanne d'Ambly, Dorothy Krovoza, Darlene Thurmond, Frances Nolde, Claire McMillen, Helen Greinke and Betty Loufek. The coast-to-coast "lipstick derby" is to end at Amelia Earhart Field, scene of all-women air show. Note about non-renewal of copyright: [1]
This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs. 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.