Series
- Yeyŏn chʻongsŏ8
- Yeyŏn chʻŏngsŏ1
- Yi Chae-o ŭi Hanʼguk minjuhwa undongsa chŏngni2
- Yi Chin ui Miguk rip`ot`u1
- Yi Chin ŭi Miguk ripʻotʻŭ1
- Yi Chu-ch'ŏn kyosu ŭi sinyongkol k'allŏm1
- Yi Chu-chʻŏn kyosu ŭi sinyonggol kʻallŏm1
- Yi Chʻang-ju Kyosu haeoe Hanminjoksa yŏnʾgujip / Yurasia pʻyŏn1
- Yi Chʻŏr-yong chŏnjip1
- Yi Ho-jae oegyo pʻyŏngnonjip3
- Yi Hyŏn-hŭi Kyosu chŏjak sŏnjip1
- Yi Hyŏn-se k'ŭllaesik1
- Yi Hyŏn-se kʻŭllaesik1
- Yi Ka-wŏn chŏnjip1
- Yi Ki-baek Hanʾguk sahak nonjip3
- Yi Ki-yŏng sŏnjip5
- Yi Kŭng-no yŏn'gu nonjip1
- Yi Kyu-tʻae kʻonŏ16
- Yi Kyu-tʻae milleniŏm buksŭ3
- Yi Kyu-tʻae ŭi Hanʾgugin siriijŭ3