• A work with a known author for which the author died more than 50 years ago.
• A work of joint authorship for which the longest-lived of the joint authors died more than 50 years ago.
• An anonymous work that was first published more than 50 years ago, or an anonymous work that was not published and which was created more than 50 years ago.
• A collective work or a computer program that was first published more than 50 years ago.
• A collective work or a computer program that was not published and which was created more than 50 years ago.
• A photograph that was first published or publicly displayed more than 50 years ago.
• A photograph that was not published or publicly displayed and which was created more than 50 years ago.
• An audiovisual work that was first published or presented more than 70 years ago.
• An audiovisual work that was not published or presented and which was created more than 70 years ago.
• A phonogram (sound recording) that was created more than 50 years ago.

Important note: Works of foreign (non-U.S.) origin must be out of copyright or freely licensed in both their home country and the United States in order to be accepted on Commons. Works of Dominican origin that have entered the public domain in the U.S. due to certain circumstances (such as publication in noncompliance with U.S. copyright formalities) and which were under copyright in the Dominican Republic on January 1, 1996 may have had their U.S. copyright restored under the URAA.[1]

你必須增加美國公有領域標籤顯示為何這個作品在美國屬於公有領域。 請注意這個作品在不適用較短期限法則的國家可能並不屬於公有領域，並有超過作者逝世後50年的著作權期限。其中，墨西哥為100年，牙買加為95年，哥倫比亞為80年，瓜地馬拉與薩摩亞為75年，瑞士和美國為70年，委內瑞拉為60年。