Along a thousand-mile chain of treeless and windswept islands, Unalaska is perched at the end of the world, or, as some prefer to say, the beginning. In 1964, Ray Hudson, 22, landed in Unalaska village with a brand-new college degree, eager to teach. The Aleuts had seen many outsiders who had come but seldom stayed more than a year. Yet Hudson was no short-timer. Captivated by Unalaska and the history and traditions of its enduring people, he stayed...