 Seminar in Geology, University of California. Back row (left to right): C.L. Moody, C.W. Clark, M.G. Edwards, W.S.W. Kew, C. Stock. Front row (left to right): F.S. Hudson, F.E. Vaughan, A.C. Lawson, E.F. Davis, N.L. Taliaferro |  Prof. Nicholas Lloyd Taliaferro |