Mammoth Plate Photographs of the North American West

Mammoth Plate Photographs of the North American West - Yale Collection of Western Americana, Beinecke Rare Book and Manuscript Library. "...The photographs in this collection were chiefly created by American photographers Carleton E. Watkins (1829-1916) and William Henry Jackson (1843-1942), and the images document various locations in the American West. Photographs by Watkins consist of images created in the states of California and Oregon, and in Arizona, Montana, Utah, Washington, and Wyoming Territories, circa 1874-1890. Most of the images created by William Henry Jackson depict locations and geological features in Colorado, while other images show locations in Utah, Idaho, New Mexico, and Oregon, 1878-1898."