The answer may be that Castillejo, who had initiated the foundation (again through co-financing by government and Rockefeller funds) of the Spanish Instituto de Estudios Internacionales y Económicos in early 1931,42 was a longstanding member of the ICIC's Executive Committee and possessed the highest institutional authority among the participants. Tracy Kittredge, finally, was the Assistant Director of the Rockefeller Foundation's European Social Sciences Division office from 1931 to 1942 and participant at a number of ISCs. In 1919, Kittredge was a staff member of the Supreme Economic Council during the Paris Peace Conference.

Dieter Plehwe, Quinn Slobodian & Philip Mirowski (eds.), Nine Lives of Neoliberalism, loc. 374