By any measure, Juan Terry Trippe was a remarkable business leader - a visionary, devious, shrewd, deeply flawed, and ultimately inscrutable genius. Franklin D. Roosevelt, a Harvard man, once called him "the most fascinating Yale gangster I ever met." Trippe built Pan American Airways from a single scrap of paper - a license to fly airmail from Key West to Havana - into the world's largest airline. In the process, he all but single-handedly shaped...