The old atlas of the Kwanbuk Districts (Korean northeastern territories) consists of 13 pieces of maps including the northern parts of Kilchu(吉州). Here are introduced only six pieces of maps Moosan(茂山), Hoeryung(會寧), Kyungsung(鏡城), Onsung(穩城), Kyungwon(慶源), and Kyunghung(慶興). Perhaps the old atlas might be made before and after the period that built the Demarcation Monument of Mt. Paektoo between the Yi Dynasty and the Ching Dynasty in the 38th year(1712) of the rule of King Sook-jong (肅宗). In the maps, armaments and military establishments are recorded in detail. The total numbers of all the soldiers(衛) and castle-guards(守城諸軍) stationed at each cities are enumerated, and especial1y, signal-fire system and its distance are mentioned one by one, so that the situations of northern defence of the Yi Dynasty maybe grasped at a glance. Moreover, the region of Kanto(間島) located at the northern parts of the Duman River is dealt with as Korean territories. It is proved that the reg-ion of Manchuria used to belong to the sphere of Korean people’s activities for about more than 3,000 years from the Ancient Korea to Koguryo and Palhae (P’ohai, 渤海). Even since the downfall of Palhae, Korean people had steadily struggled against Nuchen Tartars(Jurchen女眞族) for the purpose of regaining the old territories. To illustrate, the conquest of Jurchen by Yun Kwan (尹瓘) under the rule of King Ye-jong(睿宗) of the Koryo Dynasty and the colonization of six camps by Kim Chong-su(金宗瑞) under the rule of King Se-jong all were to regain lost territories. As the inscription of the Demarcation Monument of Mt. Paektoo erected in 1712 shows “The west is the Yalu River;the east is the Tomoon River(西爲鴨綠東爲土門),” the region around Kanto was not only related with the activities of Korean people, but also it is obvious that the region belonged to Korea. In addition, the atlas vindicates a historical fact that the region was Korean territories, because the names of village are recorded in Korean way as follows: Okdol-dong(玉乭洞), Hambak-dong(咸朴洞), Kumbu-dong(金夫洞), Woo-dong(牛洞), Pohang-dong(浦項洞), Changgo-mok(長古目), Aji-dong(阿只洞), Ori-dong(五里洞), Akyang-got(岳羊串) etc.