Frank Edward Byrne / Fred Forrest Lawrence / Geological Survey (U.S.). Champaign District / Geological Survey (U.S.). Water Resources Division. Austin District / Geological Survey (U.S.). Water Resources Division. Tacoma District / Gerald Arthur FitzGerald / Guy Clarke Stevens / Guy Earl Harbeck / Harold Coble Troxell / Jack Bennett Graham / John G. Connor / Walter Basil Langbein / Clayton Haines Hardison / Wendell B. Johnson / Denzil W. Bergman |