National Museum of Nuclear Science & History
L. J. Ritter worked for the Roane-Anderson Company.
Philip M. Barnes served as a lieutenant in the 1st Ordnance Squadron. He was the assistant weaponeer on Bockscar during the Nagasaki bombing mission.
Laska worked in the 200 East Area at Hanford during the Manhattan Project.
Matias A. Zamora is a retired attorney and judge, and a U.S. Army veteran. He worked as a server at Fuller Lodge at Los Alamos during the Manhattan Project.