National Park Service U.S. Department / National Park Service / Colorado State University / United Nations / Natural Resource Program Center / General Land Office / U.S. Department of the Interior / /
Person
Coolidge / Willis T. Lee / Robert Halley / Late Permian (Kazanian) / Geology Carlsbad / Jim White / /
Position
guano miner / President / Executive / chief ranger / park ranger / Geological Survey geologist / Resources Division Executive / General / noted Geological Survey geologist / /