This is the third of three volumes containing published and unpublished economic papers of Orley Ashenfelter written between 1966 and 1995. The volumes begin with an interview in which Professor Ashenfelter covers highlights of his professional life, a discussion of many of the essays and papers featured in these volumes, and his reflections on the development of economics over the course of his career. Education, Training and Discrimination and Employment, Labor Unions and Wages are the companion volumes to Economic Institutions and the Demand and Supply of Labor which together provide a distinguished collection of Ashenfelter's essays.