National Museum of Nuclear Science & History
Hugo Leckelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Alfred A. Lewandowski served as a staff sergeant in the 393rd Bombardment Squadron. He was the regularly assigned tail gunner for the Big Stink, and he and his crew were later reassigned to Luke the Spook.
John D. Hopper served as a civilian in Project Alberta.