National Museum of Nuclear Science & History
Attended the University of Michigan.
Ralph Carlisle Smith was born in 1910 in New York. He co-authored Project Y: The Los Alamos Story, with David Hawkins and Edith Truslow.
Johnson worked at the 200 West Area at Hanford during the Manhattan Project.
Mangold worked in the 200 West Area at Hanford during the Manhattan Project.