National Museum of Nuclear Science & History
Henry Wigen worked for the United States Engineer District Office.
John L. Willoughby served as a sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Bockscar.
Sherman was a staff member at Los Alamos during the Manhattan Project.
Josef Novak worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.