National Museum of Nuclear Science & History
Egbert Sudlow installed phone systems at all of the major facilities at Oak Ridge, Tennessee.
Harrah worked at the 300 Area at Hanford during the Manhattan Project.
David Greenglass (1922-2014) was a machinist and member of the Special Engineer Detachment who engaged in espionage activities for the Soviet Union at Los Alamos during the Manhattan Project.
E. P. Graham worked for the Tennessee Eastman Corporation at the Y-12 Plant.