Aquest material està en domini públic als Estats Units i als altres països on el dret d'autor s'estén per 70 anys (o menys) després de la mort de l'autor.

Cal incloure una etiqueta de domini públic als Estats Units per indicar perquè aquesta obra és en domini públic als Estats Units. Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).

¹ Some government publications are not subject to copyright, including bills, acts, regulations, court judgments, royal commission and select committee reports, etc. See references [1] or [2] for the full list.
² means the typographical arrangement and layout of a published work. eg. newsprint.

Cal incloure una etiqueta de domini públic als Estats Units per indicar perquè aquesta obra és en domini públic als Estats Units. 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 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years.