1. Transaction Costs, Markets and Hierarchies: Christos Pitelis (University of Cambridge). 2. The Nature and Role of Markets: Malcolm Sawyer (University of Leeds). 3. In the Beginning there were Markets?: Frederick Fourie (University of the DFS, South Africa). 4. Control, Markets and Firms: Keith Cowling and Robert Sugden (University of Birmingham). 5. Transaction Costs and the Evolution of the Firm: Geoffrey Hodgson (Newcastle Polytechnic). 6. The Appropriability Critique of Transaction Cost Economics: Gregory Dow (University of Alberta, Canada). 7. Power and Efficiency in the Firm: Paul Marginson (University of Warwick). 8. Transaction Costs,... and Revenues: Michael Dietrich (Newcastle Polytechnic). 9. Transaction Cost Economics and the State: William Dugger (DePaul University, Chicago). 10. Markets, Hierarchies and Markets Again: Steve Thompson and Mike Wright (University of Manchester and University of Nottingham). 11. Markets, False Hierarchies and the Role of Asset Specificity: Neil Kay (University of Strathclyde). 12. On Transactions (Costs) and Markets and (as) Hierarchies: Christos Pitelis (University of Cambridge).