This chapter argues for the existence of an intellectually Confucian-centred, Classical Chinese language delivered archive of knowledge across early modern East Asia. I argue that this broad, transferable, and often commercially delivered Sinosphere archive supported the creation of state-led information orders in early modern East Asia. This argument resonates with recent work in South Asian and Global History demonstrating the role of regional early modern information orders in facilitating global flows of knowledge. I focus particularly on the transregional nature of the literary, pedagogical, and book culture that underlay the information order of early modern East Asia, and the state’s prime role in its development in early modern Japan. The article thus employs the concept of archivality to analyse early modern information systems, demonstrating patterns of trans-regional knowledge development in East Asia which resonate with other early modern global examples.