National Museum of Nuclear Science & History
W. N. Sparke worked for the J.A. Jones Construction Company.
John Moriarity was a procurement officer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
J. D. McPherson worked for the United States Engineer District Office.
Jean Marley O’Leary began working for General Leslie Groves in June 1941, when she was hired as his personal secretary.
