American Antitrust Institute - Non-profit think tank devoted to antitrust issues, providing publications, daily news headlines, and links.
Antitrust Law and Economics Review - Publication about anti-trust policies,from perspective that public interest has been lost to politics and anti-competitive policies. (Last issue dated 1997, although issues still relevant.)
Mergers and Corporate Consolidation in the New Economy - Report by Robert Pitofsky, Chairman, Federal Trade Commission to the Committee on the Judiciary United States Senate, in 1998.