<p>This story of Royall Tyler is in many ways unique: an American who was almost European a self-taught art historian who became a name to reckon with in the field of Byzantine art history an amateur historian with a superb organizing faculty of mind a League of Nations officer who became intimately involved with Central Europe but mainly with Hungary an OSS officer and right-hand man of Allen Dulles during World War II a Cold Warrior until his premature death in 1953. All this provides the basis of a good story that needs to be told and through Tyler's career the European story between World War I and the early Cold War can be revisited.</p>