Duff  gives a good description of Gampopa who was a major Kagyu lineage holder and translates 9 ifferent teachings of Gampopa.

1. Interview Text: Lord Dvagpo’s Personal Advice

   and Lord Gomtshul’s Interviews

2. InterviewText:DusumKhyenpa’sInterviews
3. Interview Text; Phagmo Drupa’s Interviews
4. InterviewText:YoginChoyung’sInterview
5. THE FOUR DHARMAS IN BRIEF byGampopa
6. PRECIOUS GARLAND OF THE SUPREME PATH by Gampopa
7. LORD DVAGPO’S PERSONAL ADVICE and LORD GOMTSHUL’S INTERVIEWS
8. LORD PHAGMO DRUPA’S INTERVIEWS
9. YOGIN CHOYUNG’S INTERVIEW