Sheaves of Korean Buddhist History, a brief history of Korean Buddhism, is one of the representative works on Korean Buddhism in the modern period. The author Gim Yeongsu was a scholar-monk, who was well known for his influential research on the systems of religious orders in Korean Buddhism by advancing such theories as Five Doctrinal [schools] and Nine Mountains [school of Seon], Five Doctrinal [schools] and Two [Meditative] schools, and Two Schools of Meditative practice and doctrinal Teaching. The first part on the Three Kingdoms and the Unified Silla period includes various topics, such as the introduction of Buddhism to Korean peninsula; the achievements of eminent monks in pursuing the Buddhist truth; the adoption and development of doctrinal learning; the establishment of Buddhist schools, such as the Hwaeom school; and the transmission of Chan and the formation of Nine Mountains school of Seon. The contents of the second part on the Goryeo period include the royal worship of Buddhism, monastic examinations; the activities of eminent monks; the establishment of the Cheontae 天台 school and the Five Doctrinal [schools] and Two [Meditative] schools; the carving of the woodblocks of the Goryeo Buddhist canon; Buddhist cultural exchange with neighboring countries; the flourishing of the Seon school and the introduction of Ganhwa Seon; and so forth. The part on the Joseon period describes the official policy of persecuting Buddhism during the early Joseon period; the forced unification of Buddhist schools; the activities of monk militias during the Hideoyoshi invasion of Korea (1592–1598); synthesis of the three practices of Seon, Gyo (Buddhist doctrines), and chanting the Buddha’s name during the late Joseon; the problem of Dharma lineage of the Imje school; and Buddhist educational systems and practices. The part on the modern period examines such topics as the Temple Ordinances issued by the Japanese Colonial Government and institutional changes in the Buddhist community.