Ronald N. Hartman passed away on August 30, 2011, after a brief illness. He was a Professor of Astronomy and Director of the Planetarium at Mt. San Antonio College in Walnut, California for 38 years and was well-known in the community of meteorite collectors and hunters. His passion for meteorites was kindled when he studied astronomy at the University of California, Los Angeles under the renowned meteoriticist Frederick C. Leonard, a founder of the Meteoritical Society. He worked at Griffith Observatory giving public lectures in the 1960s and began investigating California dry lakes for the presence of meteorites. He discovered the Lucerne Dry Lake strewn field in 1963 and returned to that site in 1999 to find more of the illusive little black rocks from space. Throughout his career he continued to hunt for meteorites, first at Meteor Crater, Arizona (when it was legal) and Odessa, Texas. He found, traded, bought, cut and sold meteorites as well as tektites and shatter cones and built up a large collection, part of which is displayed at the Mt. San Antonio College Planetarium and library.