To Become a Sage - A translation by Michael C. Kalton of Toegye's Ten Diagrams on Sage Learning, with commentary, index and notes. Includes images of the complete original Chinese text, and various supplementary materials. - http://faculty.washington.edu/mkalton/
Toegyehak Institute - An institute at Korea's Andong University, devoted to scholarship on Toegye and his disciples. Conferences and activities are noted. - http://www.andong.ac.kr/english/admin/toegye.htm
Yi Hwang (T'oegye) - Article adapted from the 1994 Routledge Encyclopedia of Philosophy, briefly discussing this philosopher's relation to Korean Neo-Confucianism in general. - http://faculty.washington.edu/mkalton/T'oegye.htm
T'oegye Yi Hwang (1501 - 1570) - Bibliography of primary and secondary sources in Eastern and Western languages. - http://homepage.ruhr-uni-bochum.de/Sven.K.Herbers-Lee/dateien/tgyh.html