National Museum of Nuclear Science & History
Leslie Seward worked for the United States Engineer District Office.
J. P. Valliant worked for the Union Carbide & Carbon Corporation.
Lester E. Bowman served in the 393rd Bombardment Squadron.
John Lansdale (1912 – 2003) was a colonel in the US Army. Lansdale first learned of the Manhattan project from National Defense Research Committee Chairman James B.
