New York: American Museum of Natural History, 1933.

First Edition. Pamphlet. Light cover rub and soil, otherwise light wear. Solid paperback stapled pamphlet. ; Reprinted from Natural History Magazine for May-June 1933. Reeds was the museum's Curator of Geology and Invertebrate Palaeontology. ; Guide Leaflet Series; Vol. 77; 16 pages..... More