National Museum of Nuclear Science & History
Grace Thompson was a stenographer at the Metallurgical Laboratory in Chicago during the Manhattan Project.
W. Maddox worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Paul Walp worked for the United States Engineer District Office.
Heinie worked for Stone and Webster Engineering Corporation.
John Mench was assigned to the Special Engineer Detachment at Los Alamos where he worked as a pattern maker, creating wooden casts for metal work at the site’s foundry.