National Museum of Nuclear Science & History
R. M. James worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Robert Holmberg was born in Fort Dodge, Iowa, and began working on the Manhattan Project at the Chicago Met Lab and at Ames Laboratory in Iowa.
Marvin Wilkening, a physicist, traveled the Grand Circuit of the Manhattan Project, pursuing his specialty of measuring neutron intensity.
Vaughn Wrenn worked for the Roane-Anderson Company.