Parshotam Mehra was formerly Professor Emeritus and Chairman of the Departments of History and Central Asian Studies, Panjab University, Chandigarh. He has written extensively on India's land frontiers and relations with Tibet and China. Noteworthy among his publications are Essays in Frontier History: India, China, and the Disputed Border (OUP, 2007); The Younghusband Expedition (to Lhasa): An Interpretation, second edition (2005); The North West Frontier Drama, 1945–1947: A Re-Assessment (1998); An ‘Agreed' Frontier: Ladakh and India's Northernmost Borders, 1846–1947 (OUP, 1992); and The McMahon Line and After: A Study of the Triangular Contest on India's North-eastern Frontier between Britain, China and Tibet, 1904–47 (1974). He has also compiled A Dictionary of Modern Indian History, 1707–1947 (OUP, 1985).