About John Cartwright John R. Cartwright is a professor emeritus of Political Science at the University of Western Ontario, London, Canada. Books by John Cartwright Political Leadership in Sierra Leone by (author) John Cartwright Political Leadership in Sierra Leone by (author) John Cartwright Politics in Sierra Leone 1947-1967 by (author) John Cartwright Politics in Sierra Leone 1947-1967 by (author) John Cartwright