Tulku Urgyen Rinpoche (1920–1996) was a master in the Dzogchen tradition of Tibetan Buddhism. Teachers of Dzogchen, the Great Perfection.
You can read more here. The Sunlit Sky of Tulku Urgyen Rinpoche Erik Pema Kunsang http://levekunst.com/thesunlitskyo...
Existence & Nonexistence Teachings on Dzogchen http://www.lionsroar.com/existenceno...