San Francisco: California Historical Society, 1925. Paperback. Reprint (or offprint?), 58p., three b&w photographic plates, first separate book appearance. Softbound in 10x6.5 plain printed cardstock wraps. A bit toned, gutter at titlepage reveals exposed staples where torn out of opposite blank (blame the binder), else quite nice, clean, unmarked. Preliminary work by this Sierras expert.