National Museum of Nuclear Science & History
MacDonald was a member of the Instrument Section at the University of Chicago’s Metallurgical Laboratory.
T. F. Walsh worked for the United States Engineer District Office.
Leon Cole served in the 393rd Bombardment Squadron.
Monroe Messinger was born in New Jersey and grew up in Brooklyn and Long Island. He received a Bachelor of Science degree from the College of the City of New York.
W. C. Hinds worked for the Tennessee Eastman Corporation at the Y-12 Plant.