Aaron Director is therefore the third main protagonist in our account of the origins of the Chicago School and represents the other major link to Hayek. After undergoing conversion from leftist politics in the early 1930s at Chicago, Director had been working at the U.S. Treasury. In 1937, Director sailed to England to write a dissertation under Viner on the quantitative history of the Bank of England. When the Bank unexpectedly thwarted his efforts, Director became more closely associated with Arnold Plant and Lionel Robbins at the London School of Economics (LSE). In 1939, Director sailed back to Washington, where he worked until 1946. In 1938, his sister Rose married Milton Friedman.

Philip Mirowski & Dieter Plehwe (eds.), The Road from Mont Pèlerin, loc. 732