Lennie Morrison

Henry Stimson

As Secretary of War under Presidents Franklin D. Roosevelt and Harry Truman, Henry L. Stimson (1867-1950) oversaw the entire Manhattan Project, and was responsible for appointing key project leaders and authorizing project construction sites across the US.

J.A. Sandlin

J. E. deColongne

deColongne worked at the 300 Area at Hanford during the Manhattan Project. 

Burr H. Ritter

Burr H. Ritter was a chemical engineer at the Hooker Chemical Company in Niagara Falls, New York during the Manhattan Project.