National Museum of Nuclear Science & History
Pef worked for Stone and Webster Engineering Corporation.
John H. Martens was a research associate and chemist at the University of Chicago Met Lab and a member of the Special Engineer Detachment at Oak Ridge.
Herman H. Fussler was the Assistant Director of the Information Division and Librarian of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Lorene Sturgess was a staff worker at Los Alamos during the Manhattan Project.