File:Martin Ritter.jpg

The author of this image from Liechtenstein is unknown, and the image was published at least 70 years ago. It is therefore in the public domain in Liechtenstein by virtue of Art. 34 of the Liechtenstein Copyright Act..

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Note that this applies only if a reliable source is cited to indicate that the author is not publicly known; just not knowing who the author is is not enough to qualify the image as public domain. This image may not be in the public domain in countries other than Liechtenstein.

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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.