Diplomacy has never been a politically neutral field of historical research, even when it was confined to merely reconstructing the context of wars and revolutions. Since the nineteenth century, Renaissance Italy has been at the forefront of scholarship on diplomacy; today, with increasing awareness of the long history of the subject as well as a broader spectrum of case studies, the study of Italian diplomacy has become sophisticated and highly articulated, offering scholars many new directions for further exploration. During the period ca. 1350–ca. 1520 covered by the present volume, diplomatic sources became extremely rich and abundant. This sourcebook presents a selection of primary materials, both published and unpublished, which are mostly unavailable to English readers: a broad range of diplomatic sources, thematically organized, are introduced, translated, and annotated by an international team of leading scholars of the Italian Renaissance. The aim of this volume is to illustrate the richness of diplomatic documents both for the study of diplomacy itself as well as for other areas of historical investigation, such as gender and sexuality, crime and justice, art and leisure, and medicine.