National Museum of Nuclear Science & History
Helgeson worked at the 300 Area at Hanford during the Manhattan Project.
James Forde joined the Manhattan Project in 1944 when he was hired by the Union Carbide and Carbon Company to work at the Nash Garage Building at Columbia University, where scientists worked on developing the gaseous diffusion process.
Leland A. Brown served in the 320th Troop Carrier Squadron.
Ralph Watson worked for the Tennessee Eastman Corporation at the Y-12 Plant.