Sidney Cottle is President of FRS Associates, which provides specialized research, consulting, proprietary multiclient studies and seminars to institutional investors on the investment decision-making process and investment management. Dr. Cottle was formerly Director of Finance and Financial Institutional Research at Stanford Research Institute and a member of the faculty at the Graduate School of Business, Stanford University. He is coauthor with Benjamin Graham and David L. Dodd of the Fourth Edition of Security Analysis. He is Project Director of Pension Asset Management: The Corporate Decision, prepared for the Financial Executive Research Foundation, and also coauthor of other books on investments. He is the author of articles in the Financial Analysts Journal and other professional financial journals and twice recipient of the Graham and Dodd Award for financial writing.Roger F. Murray is S. Sloan Colt Professor Emeritus of Banking and Finance, Graduate School of Business, Columbia University, where he was successor in the classroom to Benjamin Graham and David L. Dodd, introducing more than 2,000 students to the concepts of security analysis, as well as business finance, capital markets, and portfolio management. He took a six-year hiatus from teaching to serve as Finance Committee Chairman and trustee of the College Retirement Equities Fund. A past President of the American Finance Association who is still active in investment management, he currently serves as adviser, director, or trustee of investment and business organizations.Frank E. Block was a member of the Financial Accounting Standards Board from 1979 to 1985. Previously he had spent 30 years in investment research activities in bank trust departments and on Wall Street. He has been President of the Institute of Chartered Financial Analysts (1972-1973) and the Financial Analysts Federation (1969-1970). He has been a frequent writer and speaker on investment subjects, and was an Associate Editor of the Financial Analysts Journal (1966-1979).