In the 1920's the thirsty city of San Francisco reached deep into Yosemite National Park to build the O'Shaughnessy Dam on the Tuolumne River, diverting one-third of the river's water and flooding the
More than 120 color photographs depict this jewel of the Sierra Nevada. The beauty and the grandeur of Yosemite National Park beckon 4.1 million visitors each year. Some are rock climbers, come to c
