Abstract
Harry G. Johnson contributed much to economics, his students, and the profession in his short life. Following novel contributions on optimum tariffs and retaliation done while at Cambridge University, the main contributions during his career at the University of Chicago were extending the frontiers of trade theory, building on his and others’ work in macroeconomics, as well as disseminating work on the monetary approach to the open economy. He also changed Chicago by his positive influence on and care for students, his scholarly editing of the Journal of Political Economy, and his organising that great tradition at the University, the Workshop in Trade.