U.S. Geological Survey, 1915. paperback. 154 fine lithographic plates, some folding and with captions. Monograph series 2. 4to, plain library wrappers; (spine unglued, spine label torn, corners a bit bumped, previous owner's name stamp). N.p.: U.S. Geological Survey/American Museum of Natural History, 1915. Internally near fine. very good.