National Museum of Nuclear Science & History
John Brand joined the Manhattan Project in 1943 while working at the Ilion, N.Y. plant of Remington Arms, Co.
Jean Marley O’Leary began working for General Leslie Groves in June 1941, when she was hired as his personal secretary.
J. T. Holloway worked for the United States Engineer District Office.
Robert Ball was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
