The Third Trijang Rinpoche, Lobsang Yeshe Tenzin Gyatso (1901–1981) was a Gelugpa Lama and a direct disciple of Pabongkhapa Déchen Nyingpo. He succeeded Ling Rinpoche as the junior tutor of the 14th Dalai Lama when the Dalai Lama was nineteen years old. He was also a lama of many Gelug lamas who taught in the West including Zong Rinpoche, Geshe Rabten, Lama Yeshe, Kelsang Gyatso, and Lama Zopa Rinpoche. Trijang Rinpoche's oral teachings were recorded by Zimey Rinpoche in a book called the Yellow Book. Source: Wikipedia (en)