Although what has come to be known as transaction cost economics has its origins in the 1930s, it was not until the 1970s that transaction cost economics as a systematic and identifiable field of study began. Since then, numerous theoretical developments and empirical applications have expanded and enriched the field. Recognition of its contributions to our understanding of organizations and institutions includes two Nobel laureates, Ronald Coase in 1991 and Oliver Williamson in 2009. This is an important selection of key articles on transaction cost economics by distinguished scholars including Ronald Coase, Herbert Simon, Kenneth Arrow and Richard A. Posner. This research review addresses key areas such as private ordering and credibility, contracts and organization, internal organization, vertical integration and contracting.