Named for Don E. Wilhelms, a leading student of the moon. Wilhelms coordinated a 20-year-long U.S. Geological Survey program to map the geology of the moon. His masterpiece, The Geologic History of the Moon, was published as USGS Professional paper 1348. In his book, To a Rocky Moon, he recounts the human story of lunar geology from early research to the detailed exploration by the Apollo astronauts. (M 24916) _ _.