National Museum of Nuclear Science & History
J. T. Calvert worked for the Union Carbide & Carbon Corporation.
Elwin Covey was an assistant and protégé to Glenn Seaborg, and spent most of his time with the Manhattan Project at the X-10 plant in Oak Ridge, Tennessee.
J. P. Clark worked for the Roane-Anderson Company.
A. P. Kelly worked for the Tennessee Eastman Corporation at the Y-12 Plant.