The Photographs collection in the Digital Library contains a selection from the Huntington Library’s approximately 500,000 prints and negatives spanning the century from 1850 to 1950. This superlative collection, which covers a variety of topics from the American Civil War to the building of the transcontinental railroad, from "Grand Tours" of Europe to modest family photograph albums, is particularly strong in depicting the history and development of the American West. Within this broad regional focus are late nineteenth and early twentieth century images related to Arizona, New Mexico, Utah, Nevada, and the territories of Alaska and Hawaii. Into the twentieth century there is increased emphasis on collections depicting various aspects of Southern California and Los Angeles. Subjects represented within the regional framework include photography generated by the nineteenth century great surveys of the American West, commissioned by both railroad corporations and the federal government; Native American tribes; National Parks (notably Yosemite and Yellowstone); Transportation; Mining; Agriculture; Irrigation; Tourism; Prominent families of California; Urban and suburban planning and development; Southern California architecture, to name but a few.