Grace and Roy Clarke, by Unknown, 1976, Smithsonian Archives - History Div, Roy Clarke, curator in the Department of Mineral Sciences, National Museum of Natural History (NMNH), and his wife Grace stand with Charles Obermeier, NMNH electronic technician, at a celebratory event, possibly for the opening of the new meteorites hall. As noted by Roy Clarke, the woman standing next to Obermeier (front left) is probably his wife..