M.D. degree (University of Kansas); Board certified in Anatomic and Clinical Pathology, Neuclear Medicine and Family Practice, Principle Investigator on Skylab 1, 2 and 3 (Hematology/Immunology); Flight Surgeon and Chief of Clinical Laboratories, Manned Spacecraft Center (1964-1971); Flight Surgeon and Chief of Medical Operations, Johnson Space Center (1980-1982); Flight Surgeon, Chief of International Space Medicine, Johnson Space Center, 1999 - 2007; now retired; semi finalist for the first Spacelab selection group (nominated by the National Academy of Science), but not selected.