National Museum of Nuclear Science & History
Bertrand worked in the United States Engineer District Office.
Mathis worked for Stone and Webster Engineering Corporation.
Kreitzberger worked in the 200 East Area at Hanford during the Manhattan Project.
Margaret Caldes moved to Los Alamos when her husband, William E. Caldes, was recruited to join the project in 1943.
Joseph was a staff member at Los Alamos during the Manhattan Project.
