Contents -- Contributors -- Preface -- I. Lending and the Smoothing of Uninsurable Income -- II. Demand Deposits, Trading Restrictions, and Risk Sharing -- III. Private Information, the Real Bills Doctrine, and the Quantity Theory: An Alternative Approach -- IV. Dealerships, Trading Externalities, and General Equilibrium -- V. Circulating Private Debt: An Example with a Coordination Problem -- VI. Incomplete Market Participation and the Optimal Exchange of Credit -- VII. Dynamic Coalitions, Growth, and the Firm.