Betsy A. Weld / Bruce L. Reed / Charles Caldwell Hawley / Douglas M. Sheridan / Geological Survey (U.S.) / Gordon H. VanSickle / J. H. Stewart / Allen L. Clark / Edwin H. McKee / Hubert William Lakin / Margaret S. Griffin / Raymond L. Elliott / Richard Bartlett Taylor / George W. Brett / Sherman P. Marsh |