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National Museum of Nuclear Science & History

Harry E. Stephon

GuardChicago, IL

Manhattan Project VeteranMilitary VeteranProject Worker/Staff
Sketch of Chicago Pile-1 by Melvin A. Miller

Harry Stephon was a gruard and sergeant in the U.S. Army at the Metallurgical Laboratory in Chicago during the Manhattan Project.

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Harry Truman

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Harry S. Truman (1884-1972) was the 33rd President of the United States of America. Truman first learned of the Manhattan Project after the death of President Roosevelt in April of 1945, when he relinquished his role as Vice President and took the oath of office as the next president of the United States.