Jamgokyugo (Collection of Gim Yuk's Writings)

This book contains a collection of writings by Gim Yuk (1580-1658), a renowned Confucian scholar-statesman who implemented a number of reformative policies during the reign of King Hyojong of the Joseon Dynasty (r. 1649-1659). He played a key role in the implementation of the Uniform Land Tax Law (Daedongbeop) in 1638, and promoted the use of money, water wheels, and wheeled vehicles. He also studied the calendar of Western origin (Siheollyeok, i.e. the Current Standard Calendar) and led the government of Joseon to adopt it in 1653.