Discovery of gold in 1895 brought fortune seekers to the Sulphur Springs Valley, once the stomping ground of Cochise and Geronimo. A lawman turned train robber, an Arizona Ranger murdered by his wife, and a famous artist were just a few of the people who settled in Pearce. The Commonwealth Mine provided resources for a flourishing community until the Depression and the mine's decline. In the early 1960s, the Horizon Corporation began marketing Valley land as a utopian retirement destination for the World War II generation. Bit by bit, Sunsites sprang up just 2 miles from sparsely populated...