This organizational chart outlines the people behind the Manhattan Project, the American-led World War II research and development project that produced the first atomic bombs. The chart dates from May 1946, nine months after two atomic bombs produced by the project were dropped on Japan, thus bringing World War II to a close. The Manhattan Project was disbanded in August 1947 and its work was taken over by the United States Atomic Energy Commission.
image via US Army
Thanks Lori Dorn!