There are files of correspondence and papers of other economists and of his students, his research papers and professional publications, a group of published and unpublished papers dealing with the "Graham Plan" (Benjamin Graham, a securities analyst) for basing a monetary standard on a "basket" of primary commodities, and also the research notes of his work for the U.N. on Central America and tax reform in Chile. The teaching materials are accompanied by notes by Hart that describe the papers and relate them to the events of his life and thinking. The section headings in these notes correspond to the major divisions of the teaching materials.Among the correspondents are: Milton Friedman, J.K. Galbraith, A.B. Hart, J.M. Keynes, David Rockefeller, and F.W. Taussig.