National Museum of Nuclear Science & History
Hartman worked for Stone and Webster Engineering Corporation.
Lewis W. McDuffie served in the 603rd Air Engineering Squadron.
Anna Barbic was a laboratory assistant in the the Chemistry Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
H. A. Rehnberg worked for the Kellex Corporation at the K-25 Plant.
C. R. Baldock worked for the Tennessee Eastman Corporation at the Y-12 Plant.
