This book contains papers, prepared for a conference held at the Wisconsin Law School in 2011, in honor the work of Stewart Macaulay, one of the most famous contracts scholars of his generation. Macaulay has been writing about contracts and contract law for over 50 years, with the 1960s being particularly productive years for Macaulay, when he introduced many novel ideas into the scholarly world. Macaulay's foundational work, for what is now called relational contract theory, was published during this period. He is also known for his use of empirical research and interdisciplinary theories which illuminate our knowledge of contracting practices. The papers reflect, in diverse ways, on the subsequent influence and the contemporary relevance of Stewart Macaulay's work. All the contributors are important contracts scholars in their own right. The book also reproduces Macaulay's most cited paper: Non-Contractual Relations in Business. (Series: International Studies in the Theory of Private Law - Vol. 10)