Charles Lee McGuinness / David A. Rickert / Edward Malcolm MacKevett / Geological Survey (U.S.) / George William Moore / Harold Edgar Thomas / Harold P. Guy / James E. Elliott / John Henry Feth / John Richard Sheaffer / John Stevens Schlee / Linda J. Britton / Paul Kellogg Theobald / Robert Sprague Jones / Saul Edward Rantz / William Joseph Schneider / Andrew Maute Spieker / Charles Emmet Thompson / Davis W. Ellis / Eli A. Silver / James E. Goddard / James G. Smith / John David Wells / R. C. Averett / R. F. Ferreira | 