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A work is in the '''public domain''' if nobody holds any property rights on it. Works that are in the public domain can be freely copied.

A work is in the '''public domain''' if nobody holds any property rights on it. Works that are in the public domain can be freely copied.

Two examples of material in the public domain are United States government works and writings for which their [[copyright]] has expired.  Generally anything published before 1923 cannot have copyright protection and is in the public domain.<ref>http://www.copyright.cornell.edu/training/Hirtle_Public_Domain.htm</ref>

Two examples of material in the public domain are United States government works and writings for which their [[copyright]] has expired.  Generally anything published before 1923 cannot have copyright protection and is in the public domain (in the United States).

<ref>http://www.copyright.cornell.edu/training/Hirtle_Public_Domain.htm</ref>

== See also ==

== See also ==