También debes incluir una etiqueta de dominio público de los Estados Unidos para indicar por qué esta obra está en el dominio público en los Estados Unidos. Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 60 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, and Switzerland and the United States are 70 years.
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• it is a photograph, a cinematographic work or a sound recording and at least 50 years have passed since the end of the year of its publication (or since the year of creation for photographs from before independence in 1947, as per the Copyright Act 1911).
• it is a governmental or anonymous work and at least 50 years have passed since the end of the year of its publication.