----------------- HES POSTING ----------------- Apparently, the AD-AS graph was used in a textbook for the first time in Jacob Marschak's "Income, Employment and the Price Level" (New York: Kelley, 1951), based on lectures given at the University of Chicago in 1948 and 1949. See also M. Boianovsky (2002): "Patinkin, the Cowles Commission and the theory of unemployment and aggregate supply", European Journal of the History of Economic Thought, 9, summer (forthcoming). Mauro Boianovsky ------------ FOOTER TO HES POSTING ------------ For information, send the message "info HES" to [log in to unmask]