National Museum of Nuclear Science & History
R.J. Stepheson was a consultant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Van Doubek, Jr. served in the 320th Troop Carrier Squadron.
Sidney Williams was a janitor at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
C. W. Knapp worked for the Union Carbide & Carbon Corporation.