Whitlock, Herbert P.2020-05-112020-05-111934http://digitallibrary.amnh.org/handle/2246/721916 p. : ill. ; 26 cm.Jade, amber, and ivory in the Drummond Memorial, American Museum of Natural History. Reprinted from Natural history magazine for September, 1934.en-USJade.Amber.Ivory.American Museum of Natural History. Drummond Memorial.Other