National Museum of Nuclear Science & History
Emerald Lyons Jr. was an electrical engineer at Oak Ridge, Tennessee from 1944 to 1945.
William R. Purnell (1886-1955) was a Rear Admiral in the US Navy and served as the Navy liaison on the Military Policy Committee for the Manhattan Project.
M. E. Brennan worked for the Watson-Flagg Engineering Company.
W. B. Caldwell worked for Clinton Laboratories at the X-10 Reactor.