http://www.coinbooks.org/esylum_v10n07a02.html
http://www.antiquetrader.com/default.aspx?tabid=1743&view=topic&forumid=114&postid=21466
http://www.maineantiquedigest.com/articles/mar07/copyright0307.htm

"On November 7, 2006, Heritage Auction Galleries, Inc. of Dallas filed
suit against Superior Galleries, Inc. of California, charging copyright
infringement, unfair competition, and that Superior had flat out stolen
its printed catalog descriptions relating to coins. Heritage claims that
Superior “has reproduced and distributed, and is continuing to reproduce and distribute, to the public, auction catalogs containing unauthorized copies and/or derivative works of the Copyrighted Works that were copied and/or derived from Heritage’s own catalogs and/or archives.”