... ^ The author of this work is anonymous and this work is more than 50 years old. According to the Berne convention Art. 7 ( http://www.wipo.int/treaties/en/ip/berne/trtdocs_wo001.html#P127_22000 ), and the laws of many countries, this work is in the * public domain * . ^ ...
--Wikipedia Public Domain License, Version Anonymous work. (Paragraph 1.)