This book is selected complementary and modified among papers published in journals new-wrote unpublished papers for latest a few years. Especially, papers about Kim Ka-chin(金嘉鎭), Sin Ik-hŭi(申翼熙), Yi Pŏm-chin(李範晉), Yi To-ch'ŏl(李道徹), An T'ae-hun(安泰勳), Yi Chun-yong(李埈鎔) are first introduced with academic system. Also, papers about Yi Tong-hwi(李東輝), An Kong-kŭn(安恭根), Ch'oe Nam-sŏn(崔南善), Chŏng In-po(鄭寅普), An Chae-hong(安在鴻) were written adding point of view unlike newly found materials and existing research while referencing existing research results.