This three-volume work constitutes a comprehensive scholarly edition of the correspondence of the English economist, Alfred Marshall (1842-1924), one of the leading figures in the development of economics and the founder of the Cambridge School of Economics. The edition fills a long- standing gap in the history of economic thought and contains hitherto unpublished material. Notable for their frankness and spontaneity, Marshall's letters provide much new information about his views on economic, social and political issues, his struggles to promote the teaching of economics at the University of Cambridge, and his relations with colleagues there and elsewhere.