This edition includes the complete correspondence of Francis Junius (1591–1677), who may be called the father of modern art theory and of comparative Germanic philology. The edition offers insight into this Dutch scholar’s life and studies in the context of his family, friends, and employment by the English Arundel family. All were intimately associated with the leading circles of scholars, aristocrats and dignitaries in the Low Countries and England. The corpus of 226 Latin, English and Dutch letters has been edited with generous annotations, English translations, an introduction, and a critical apparatus. The letters are an invaluable source of detail for students of seventeenth-century intellectual history, English and Dutch elite culture, Germanic philology, art history, and learned networks.