National Museum of Nuclear Science & History
R. W. Addington worked for the J.A. Jones Construction Company.
Joseph Gilbert “Joe” Hamilton (1907-1957) was a physician who directed biomedical research at the Berkeley site of the Manhattan Project.
Jack Widowsky served as a second lieutenant in the 393rd Bombardment Squadron. He was regularly assigned to the B-29 Top Secret.
J. R. Siebert worked for the Comstock-Bryant Electric Company.