This work reflects in large measure the invaluable aid of my colleagues on the RFF staff. I am particularly indebted to Sam H. Schurr for his counsel and guidance. I wish also to express my appreciation to Orris C. Herfindahl and Joseph Lerner, whose thorough criticism was of great value in preparing the final draft. The number of persons outside the RFF staff who assisted in the review of early drafts of this study is so large that it is not possible to list the specific benefit for which I am indebted to each individual. I acknowledge with thanks, however, the contributions of the following: Warren L. Baker, World Oil magazine; Austin Cadle, Standard Oil Co. of California; Ira H. Cram, Continental Oil Co.; Joel Dirlam, University of Connecticut; Richard J. Gonzalez, Humble Oil and Refining Co.; M. King Hubbert, Shell Development Co.; Alfred E. Kahn, Cornell University; S. G. Lasky, U. S. Department of the Interior; Paul W. McGann, U. S. Bureau of Mines; Eger V. Murphree, U. S. Department of Defense; Daniel Parson, American Gas Association; Wallace E. Pratt, Consultant; W. C. Schroeder, University of Maryland; P. R. Schultz, Blackwell Oil and Gas Co.; Lyon F. Terry, Chase Manhattan Bank; W. B. Tippy, Commonwealth Services, Inc.; Paul D. Torrey, Petroleum Engineer; Lewis G. Weeks, Standard Oil Co. of New Jersey; and Robert Wilson, Standard Oil Co. of Indiana.
In thanking these individuals, I wish to emphasize that