National Museum of Nuclear Science & History
MacDonald was a member of the Instrument Section at the University of Chicago’s Metallurgical Laboratory.
John Wilkes worked for the Roane-Anderson Company.
Rose C. Mooney-Slater (1902-1981) was a physicist and crystallographer at the University of Chicago Met Lab.
J. E. McLeroy, Jr. worked for the Comstock-Bryant Electric Company.