Sar kaH thog pa bsod nams rgyal mtshan dpal bzan po'i rnam par thar pa dri med yid bzin nor bu'i phren ba

Biography of Katok Sonam Gyaltsen, a teacher of the Katok order of the Nyingma who was active in Sikkim and Bhutan in the 17th century. From an original manuscript preserved in the Burmiok Library. Sonam Gyaltsen was the most important exponent of the Katok order, one of the three major Nyingma orders (other two are Lhatsunpa and Ngadagpa) involved in the founding of the Sikkimese state.