National Museum of Nuclear Science & History
Dr. Lewis Preston arrived in Oak Ridge in 1944. A recent graduate of the Baylor University College of Medicine, he joined the Army Medical Corps.
Before the war Oswald Greager was a high-ranking DuPont chemist. He took leave from DuPont in 1942 to join the Army's Chemical Warfare Service.
Rex Edward Keller was a member of the Special Engineering Detachment, assigned to work in Seth Neddermeyer’s chemistry group at Los Alamos.
