These works are in the public domain because the items were published in the United States between 1923 and 1977 without a copyright notice. The items are not in the public domain in the countries or areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, Switzerland, and other countries with individual treaties. See this page for further explanation.
All works are believed to be in the public domain. We will immediately remove any content that doesn't fall within public domain. Contact us with any concerns.
