National Museum of Nuclear Science & History
T. J. Costello worked for the Comstock-Bryant Electric Company.
Dominick Itzi was stationed at Los Alamos with the Provisional Engineer Detachment (PED) from 1944 to 1946.
Matoske worked in the 300 Area at Hanford during the Manhattan Project.
John Roberts was a staff worker at Los Alamos during the Manhattan Project.