你必须增加美国公有领域标签显示为何这个作品在美国属于公有领域。 请注意这个作品在不适用较短期限法则的国家可能并不属于公有领域，并有超过作者逝世后50年的著作权期限。其中，墨西哥为100年，牙买加为95年，哥伦比亚为80年，危地马拉与萨摩亚为75年，瑞士和美国为70年，委内瑞拉为60年。

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• it was simultaneously published (within 30 days) in the U.S. and in its source country and is in the public domain in the U.S. as a U.S. work (no copyright registered, or not renewed),

or

• it was first published outside the United States (and not published in the U.S. within 30 days) and
• it was first published before 1978 without complying with U.S. copyright formalities or after 1978 without copyright notice and
• it was in the public domain in its home country on the URAA date ( January 1, 1996 for most countries).

This work may still be copyrighted in other countries.

For background information, see the explanations on Non-U.S. copyrights. Note: in addition to this statement, there must be a statement on this page explaining why the work is in the public domain in the U.S. (for the first case) or why it was PD on the URAA date in its source country (second case). Additionally, there must be verifiable information about previous publications of the work.

本作品属于上述条款，并在中国大陆和该法律其他的可能管辖区，属于公有领域。对于著作权过期的作品，参见{{PD-China}}、{{PD-PRC}}。