Historians have long been interested in knowledgeits nature and origin, and the circumstances under which it was createdbut it has only been in recent years that the history of knowledge has emerged as an academic field in its own right. In Circulation of Knowledge, a group of Nordic scholars explore a range of theoretical and methodological approaches to this new and exciting area of historical research. The question of knowledge in motion is central to their investigations, and especially how knowledge is transformed when it circulates between different societal arenas, literary genres, or forms of media. Reflecting on twelve empirical studies, from sixteenth-century cartography to sexology in the 1970s, the authors make a significant contribution to the growing international research on the history of knowledge.