Early Photographers of Glacier National Park examines the photographers, and the photographs they produced, who worked in the pre-park period up through the first three decades of Glacier Park (1910-1940). Photographers and their work examined include those accompanying the George B. Grinnell and Lyman B. Sperry explorations in the 1880s and 1890s, photographers for the early U.S. Geological Survey mapping projects, the stereogram photographs of N...