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. A. Forsyth, college professor and first Glacier Park Naturalist Morton J. Elrod, photographers for the Great Northern Railway (Fred Kiser, R. E. "Ted" Marble, Roland Reed, and T. J. Hileman), National Park Service Photographer George A. Grant, U.S. Forest Service Photographer K. D. Swan, the fire lookout photographs of L. M. Moe, and the first aerial photographs of Glacier Park taken by Captain A. W. Stevens. The book also has several more modern photographs taken by the author and others, illustrating landscape changes in Glacier Park since the early period of park photography.