National Museum of Nuclear Science & History
E. L. Robinson worked for the H. K. Ferguson Company.
Enrico Fermi (1901-1954) was an Italian physicist and recipient of the 1938 Nobel Prize in Physics. In 1942, Fermi relocated to the Chicago Met Lab, where he built an experimental reactor pile under Stagg Field at the University of Chicago.
Dreeszan worked in the United States Engineer District Office.