This book critically investigates the historiography of International Relations. For the past fifteen years, the field has witnessed the development of a strong interest in the history of the discipline. The chapters in this edited volume, written by some of the field’s preeminent disciplinary historians, all manifest the best of an innovative and exciting generation of scholarship on the history of the discipline of International Relations. One of the objectives of this volume is to take stock of the historical turn. Yet this volume is not simply a stock-taking exercise, as it also intends to identify the limitations and blind spots of the recent historiographical literature. The chapters consider a range of diverse thinkers and examine their impact on understanding various dimensions of the field’s history.