National Museum of Nuclear Science & History
D. V. Parker worked for the Roane-Anderson Company.
William E. Caldes studied chemical engineering at Princeton University. In 1943, he was recruited to join the Manhattan Project, and became the 19th project member at Los Alamos.
E. V. Martin worked for the Tennessee Eastman Corporation at the Y-12 Plant.
E. H. Douglas worked at the 300 Area at Hanford during the Manhattan Project.