In the wake of the devastating 1906 earthquake and fire, the city of San Francisco desperately needed reliable supplies of water and electricity. Its mayor, Jam

When water from the Sierra Nevada reached the San Francisco Bay area in 1934, it was greeted by a national celebration after two decades of grueling constructio

In the classic nature work, The Yosemite, the great American naturalist, John Muir, describes the Yosemite valley's geography and the myriad types of trees, flo