Close against the Idaho-Wyoming border, at the headwaters of the Snake River, lies the high, mountain-girt valley of Jackson Hole. Fiercely beautiful in setting and richly historic in background, Jackson Hole and the raw, jagged peaks of the Teton mountains to the west have captured popular imagination as has no other region in the Rockies. Jackson Hole has become a fabled outpost of the vanished Western frontier, the legendary “last stand of the outlaws.” And of all the stories which have given rise to that picture, perhaps none is more starkly simple than one which has become known as _The Affair at Cunningham’s Ranch_. As in the case of other frontier communities, the story of the early settlers in Jackson Hole is one of isolation and hardship. When winter closed in and cut off the valley from the nearest settlements across the mountains, life was a struggle for survival against the bitter cold and drifting snow. Occupied with the task of making a home in the face of tremendous odds, the homesteaders were solid, law-abiding citizens with little time for lawlessness, and less for violence. On the rare occasions when gun-play broke out between men in the valley, it was of a nature that could hardly appear heroic except through the romantic eyes of a novelist. In the harsh light of reality, violence was brutal and ugly, and dispatched with a speed and finality grimly typical of the frontier. The Cunningham Ranch affair broke with a suddenness that shocked the entire valley. It was as cold-blooded as it was simple. A posse came riding in from Montana in the spring of 1893, and at a little cabin near Spread Creek two men were cornered and shot for horse-stealing. Little news of the Spread Creek incident ever leaked out of the valley in the early days, and when the first general flow of tourist travel into Jackson Hole began nearly 40 years later, the affair at Cunningham’s Ranch was still a widely known but reticently guarded story. By then most of the old-timers who had been members of the posse were dead, and those who were left still were not interested in discussing the matter. And so the story of the killing relies almost entirely on the memory and information of the one man who cared to talk about it, Pierce Cunningham. A quiet, weather-beaten little man, Pierce Cunningham came into Jackson Hole with the first influx of settlers during the late 1880’s and early 1890’s. He homesteaded in the valley, and there, on Flat Creek, he worked his ranch and married and raised his family.