Edited by the late Mark Blaug, former Professor Emeritus, University of London and Professor Emeritus, University of Buckingham, UK

• Professor Pigou's theory of unemployment, R.F. Harrod; Professor Pigou's theory of unemployment, S.E. Harris; Arthur Cecil Pigou, 1877-1959, Harry G. Johnson; Pigou and the "Pigou effect" - rendezvous with the author, Jacques Melitz; the appointment of Pigou as Marshall's successor, R.H. Coase; the appointment of Pigou as Marshall's successor - comment, A.W. Coats; Marshall on Pigou's wealth and welfare, Krishna Bharadwaj; Pigou, taxation and public goods, A.B. Atkinson and N.H. Stern; the appointment of Pigou as Marshall's successor - the other side of the coin, T.W. Jones; Pigou - an extension of Sidgwickian thought, Margaret G. O'Donnell; Pigou on expectations and the cycle, David A. Collard; were the ordinalists wrong about welfare economics, Robert Cooter and Peter Rappoport; a new look at the ordinalist revolution - comments on Cootes and Rappoport, Pieter Hennipman; reply to Professor Hennipman, Peter Rappoport.