National Museum of Nuclear Science & History
Joseph was a staff member at Los Alamos during the Manhattan Project.
John Klein was a member of the Special Engineering Detachment. He worked at the Metallurgical Lab at the University of Chicago and at Los Alamos.
David Hawkins (1913-2002) was an administrative aide at Los Alamos and the Manhattan Project’s official historian.
Mars worked for Stone and Webster Engineering Corporation.
Morris worked in the 300 Area at Hanford during the Manhattan Project.
