Template:PD-US-no notice

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This work is in the public domain because it was published in the United States between 1923 and 1977 without a copyright notice. It is not in the public domain in the following countries that do not apply the rule of the shorter term for US works: Canada, China (not Hong Kong, Macao, or Taiwan Area), Germany, Mexico, Switzerland, and other countries with individual treaties. See this page for further explanation.