Following graduation from law school, Don joined the Executive Office of the President, Bureau of the Budget, where he assisted in coordinating policies, budgets and legislative matters pertaining to federal energy and water resource development. He entered private practice in 1969 and was a founder of the firm of Duncan & Allen.
Don has concentrated on energy law and international law with emphasis in the areas of electric power and natural gas matters, law of the sea, international business transactions and major project financing.
In the field of domestic law, he has represented consumer-owned utilities, public bodies and private companies before federal administrative agencies and courts. His publications include:
He co-authored Joint Ventures in the Electric Power Industry (Washington, D.C., 1981) and edited Electric Power: Current Issues in Regulation and Finance (New York, 1982).
In the field of international law, Don has represented both foreign governments and private parties in the U.S. and abroad. He has written “Legal Status of the Continental Shelf of the East China Sea”, 51 Oregon Law Review 789 (1972) and edited the two volume book, Legal Aspects of Doing Business With Black Africa (New York, 1981).
Don has spoken frequently before professional groups and trade associations. He has organized and chaired two national continuing legal education programs for the Practicing Law Institute of New York. Don is a member of the Bars of the District of Columbia and the State of New York and has been admitted to practice before the United States Supreme Court.