Dr. Alfred O. C. Nier, atom bomb specialist, physics professor at the University of Minnesota, swims, fishes, here runs along Cass Lake beach with his wife Ruth.
Dr. Athelstan Spilhaus, Minnesota's dean of technology, is a fisherman and hunter, likes "anything that has to do with the outdoors or the sea." Here (right) he is on an African hunt.
Arnold Wexler, physicist and meteorologist, likes to climb mountains for relaxation, is particularly thrilled by first ascents, of which he has made 50 in 15 years of climbing on this continent.
Dr. J. Robert Oppenheimer, director of the esteemed Institute for Advanced Study in Princeton, is an ardent sailor. He is shown here on six weeks' cruise he took with his family in the Caribbean.
Dr. Joseph E. Murray, experimental surgeon famous for kidney transplants, and wife are active tennis fans.
Thornton Read, theoretical physicist at the Bell Telephone Labs, was Golden Glover, still teaches PAL kids.
Dr. George I. Bell, Los Alamos reactor expert, was photographed on first ascent of Nevado Salcantay, 20,000-foot peak in Peru.