• The work was first published before 1923 (use {{PD-1923}} or {{PD-old-auto-1923}} to indicate this);
• The artist moved or traveled to another nation where the work was first published and where it fell into the public domain before the URAA date (see en:Wikipedia:Non-U.S. copyrights to assess these);
• The work is not copyrightable in the United States, e.g. architectural works (i.e. buildings) constructed before December 1, 1990 (tag with {{PD-US-architecture}});
• The work is permitted by a legal exception such as freedom of panorama or de minimis (any sculptures by this artist used under freedom of panorama should be tagged with {{Not-free-US-FOP}});
• The work was concurrently published in the United States and one of the United States public domain tags applies;
• The work was released by the author or their heirs via E-mail confirmed authorisation;
• The work is known to be in the public domain for some other clear reason.

For more information, see Commons:Licensing and Commons:Derivative works.