I have in my possesion a tiny booklet. It is a collection of letters written by the famous novelist 'Mu.Varadarajan' (popularly known as Muva & Varatharasanar). He was famous for his literary work in Tamilnadu. In one of the letters, he mentions meeting up with His Holiness Gnanavallal Paranjothi Mahan. In it, he says how he was initiated by Mahan in the Kundalini practice and how it had helped enormously in his personal and writing career.
