A very important southwestern pottery type, well dated by tree ring studies, is called Deadmans Black-on-white by Colton, and Black Mesa Pueblo II Black-on-white by Morss. When the Handbook of Northern Arizona Pottery Wares (Colton and Hargrave, 1937) was being written, and there were two descriptions of the type, the question arose which name to choose. The original description of Deadmans Black-on-white appeared in Bulletin 104 of the Bureau of American Ethnology, which carried a printed authorization date of Feb. 17, 1931, and which appeared in 1932. Morss published his description of the same type in 1931, calling it Black Mesa Pueblo II Black-on-white (Papers of the Peabody Museum of American Archaeology and Ethnology).