Scope and Contents From the Collection: Natural Science, history, geology, religion, anthropology, government reports, maps, advertising ephemera, letterhead art, This is a collection of incoming and outgoing correspondence of Charles M.B. Cadwalader, dating from 1933 to 1939. Much of the correspondence relates to the acquisition of specimens, donations, estates and annuities, publications, and other Academy business. There is also a significant amount of correspondence with scientists on Academy expeditions,...