Robert Mackenzie “Bob” Underhill (1893-1988) was a finance officer for the University of California during the Manhattan Project. UC had several government contracts, including the official management of Los Alamos. Nevertheless, Underhill was the only UC official to know that the project was building an atomic bomb. He worked in Los Alamos to protect the university’s financial interests.
Robert M. Underhill
Secretary and Treasurer of the RegentsLos Alamos, NM
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.