In addition to his active practice in employment law and complex litigation, he is one of the foremost legal specialists in cultural property in the U.S. Mr. Tompa is also a well-known author on cultural property issues and has frequently contributed to academic publications and specialist magazines. Mr. Tompa is the preeminent Internet blogger on cultural property issues from the museum and collector perspective. He is a fellow and trustee of the American Numismatic Society and a board member of the Ancient Coin Collectors Guild, a life member of the American Numismatic Association, and a member of the Ancient Numismatic Society of Washington, D.C.