Donald C. Cook: CPA, SEC Chairman, corporate legend, and presidential advisor

Donald C. Cook served as a member of the U. S. Securities and Exchange Commission (SEC) from 1949 to 1953 and as Chairman during the last two years. His unique position as the only Certified Public Accountant (CPA) who served as Commission Chairman has been largely unnoticed and elicits the need for a profile about the individual, his background, career, and what, if any, legacy might be related to it. Cook was also unique in that his prior staff experience at the SEC was primarily in the public utilities division. This profile describes and identifies several episodes in Cook’s career at the SEC and after. These include other public service positions in government and his executive career at American Electric Power (AEP) as president and board chairman. These years were often filled with controversy and challenges in dealings with the SEC and with issues relating to consolidation among utilities as the country’s demand for electrical energy grew substantially. His government service roles beyond the SEC acquainted him with many political leaders. He was an advisor to President Lyndon Johnson, who shared the opinion of others that Cook was “the smartest man in the country” [Johnson, Telephone conversation No. 7070, March 16, 1965].