On July 4, 1876, immigrants from Boston traveling to California were camped at Antelope Spring in a valley just south of the San Francisco Peaks. To celebrate the nation's centennial, the pioneers stripped the branches off a tall pine tree and ran up Old Glory. This event gave Flagstaff its name. Six years later, in 1882, the Atlantic and Pacific Railway reached Flagstaff, and a small settlement was born. Railroad construction crews used local ponderosa pine trees for rail ties, beginning a timber industry that thrived in the region for the next century. Flagstaff also became a center of...