Haedong Jegukgi (Korean: 해동제국기) or Records of Countries Across the Sea to the East is a fifteenth-century Korean text on relations between Joseon, Japan, and the Ryūkyū Kingdom. Compiled by government officials c. 1470–71, it was presented to King Seongjong early in 1472; though this manuscript is now lost, an expanded printed version of 1512 is still extant. This later printed version includes a chronicle of the Emperors of Japan, a gazetteer of Japan, and maps of Japan and Ryūkyū. Source: Wikipedia (en)