Preface / Richard O. Zerbe -- Consumers, economics, and antitrust / John B. Kirkwood -- The morton and international salt cases : discounts on sales of table salt / John L. Peterman -- Injunctive relief in Sherman act monopolization cases / Robert W. Crandall, Kenneth G. Elzinga -- United shoe machinery revisited / Roger D. Blair, Jill Boylston Herndon -- An economic justification for a price standard in merger policy : the merger of superior propane and ICG propane / Richard O. Zerbe, Sunny Knott -- Vertical mergers and market foreclosure / William S. Comanor, Patrick Rey -- The competitive-neighbors approach to analyzing differentiated product mergers / Paul A. Johnson, James Levinsohn, Richard S. Higgins -- Settling the controversy over patent settlements : payments by the patent holder should be per se illegal / Cristofer Leffler, Keith Leffler -- Titan agonistes : the wealth effects of the standard oil (N.J.) case / Michael Reksulak, William F. Shughart, Robert D. Tollison, Atin Basuchoudhary -- Successful monopolization through predation : the National Cash Register Company / Kenneth Brevoort, Howard P. Marvel.

This volume contains ten papers, by many prominent authors, examining antitrust issues of current interest. The first paper summarizes the other papers and presents original research on the meaning of consumer welfare and the sources of buyer power. The next five articles evaluate older antitrust cases to determine whether the decisions reached, the relief ordered, or both, enhanced consumer welfare. The seventh paper describes a new measure of efficiency that gives greater weight to consumer harm and applies it to a recent merger. The next paper explains a new way in which vertical foreclosure can enhance the market power of an upstream supplier. The ninth article refines an innovative technique for identifying substitutes among a set of differentiated products. The tenth paper confronts a contentious policy issue - the treatment of patent settlements in which the patent holder pays the challenger to exit the market - and concludes that they should be per se illegal.

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