In December 1969Official letter from PERSON@1 , NUMBER@1 Retrieved NUMBER@2 - Also available in Riding the Tiger -LRB- NUMBER@3 -RRB- Ole and PERSON@2 met the 16th Karmapa , PERSON@3 , a renowned yogi and the head of the ORGANIZATION@1 lineage .

In December NUMBER@4 Letter from PERSON@1 , -LSB- -RSB- PERSON@4 and his late wife , PERSON@2 met the 16th Karmapa , PERSON@3 , a renowned yogi and the head of the ORGANIZATION@1 lineage .
