 During 1984-88 he was Visiting Gaekwad Professor at BHU.He was the first National Fellow of ICHR from 1985–86 and was the President cum Chairman, Indian Institute of Advanced Study, Shimla.He was the Chairman of the Allahabad Museum Society and the Central Institute of Higher Tibetan Studies, Sarnath, and Editorial Fellow, Project in Indian History of Science, and Philosophy and Culture.