National Museum of Nuclear Science & History
H. W. Butsch worked for the William A. Pope Company.
Herbert M. Parker (1910-1984) was a British-American medical physicist. He worked at Chicago, Oak Ridge, and Hanford during the Manhattan Project, and is perhaps best known for inventing the rep (a precursor of the rad) and helping develop the rem to measure radiation dosage.
R. E. Carroll worked for the Roane-Anderson Company.