National Museum of Nuclear Science & History
P. D. Simpson worked for the Poe Piping & Heating Company.
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.
Frank Stanek served in the First Ordnance Squadron.
George Cowan joined the Manhattan Project in 1942 at the Met Lab as a chemist for Enrico Fermi’s group, and also worked for Columbia University.
Edward Jay served in the 1395th Military Police Company, Aviation.
