IN PREPARATION of this study I have interviewed a great many different individuals and read many tracts, speeches and books which dealt with the purposes, practices, ideals and problems of all kinds of transportation. Probably the interviews helped most to get at the fundamentals of the industry because the running fire of discussion quickly and frankly reached the essential features of the questions considered. Many of the interviews developed illuminating, deeply penetrating analyses.
I must acknowledge great indebtedness to former Commissioner Thomas F. Woodlock and Commissioners B. H. Meyer, Joseph B. Eastman and Charles D. Mahaffie of the Interstate Commerce Commission, who with other officials of the commission helped me not only to understand the high ideals which motivate this body, but gave me a constructive understanding of the entire question of regulation as well as a revealing cross section of today's transportation problems. Others interviewed who helped materially in both specific and general fields were Colonel Leonard P. Ayres of the Cleve