Carleton Watkins (1829–1916) is widely considered the greatest American photographer of the nineteenth century and arguably the most influential artist of his era. He is best known for his pictures of Yosemite Valley and the nearby Mariposa Grove of giant sequoias.
 
Watkins made his first trip to Yosemite Valley and Mariposa Grove in 1861 just as the Civil War was beginning. His photographs of Yosemite were exhibited in New York for the first time in 1862, as news of the Union’s disastrous defeat at Fredericksburg was landing in newspapers and while the Matthew Brady Studio’s horrific photographs of Antietam were on view. Watkins’s work tied the West to Northern cultural traditions and played a key role in pledging the once-wavering West to Union. Paperback, 536 pages.