National Museum of Nuclear Science & History
Kay Manley, Canadian-born, came to the United States in 1933 to study. She and her husband John Manley were at the Manhattan District in Chicago, when her husband was personally called by Leo Szilard and asked to move from the Met Lab to Los Alamos.
Charles Helmers worked for the J.A. Jones Construction Company.
H. M. Nappen worked for the Tennessee Eastman Corporation at the Y-12 Plant.
