• It is a broadcast program and twenty years have elapsed since the end of the year in which it was first aired.
• It is a photographic work, cinematographic work, performance, or software and fifty years have elapsed since the end of the year in which it was created.
• It is another type of work and fifty years have elapsed since the end of the year in which the author died.

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。