correlation of some of the formations.” The book seeks to provide a “comprehensive, systematic review and index” of the literature on this subject and “to clear up many problems in synonymy, geologic and geographic distribution of species, and so on.” Henderson, J. 1935. Margaritifera and Fluminicola in Wyoming. Nautilus 48(3):107. Henderson, J. 1936. Mollusca of Colorado, Utah, Montana, Idaho and Wyoming. Supplement. University of Colorado Studies, Boulder, Colorado 23(2):81-145. Henderson, J. 1936. The non-marine Mollusca of Oregon and Washington. Supplement. University of Colorado Studies, Boulder, Colorado 23(4):251-280. Henderson, J. 1939. The mollusca of New Mexico and Arizona. pp. 187–194 in D.D. Brand and F.E. Harvey (eds.). So live the works of men. University of New Mexico Press. Albuquerque, New Mexico. 366 pp. Henderson, J., and H.G. Rodek. 1934. New species of Pliocene Mollusca from Eastern Oregon. Journal of Paleontology 8(3):264-269. References 1865 births 1937 deaths Politicians from Boulder, Colorado University of Colorado Boulder faculty American malacologists American naturalists People from Marshalltown, Iowa American founders