National Museum of Nuclear Science & History
Gross worked at the 100-D Area at Hanford during the Manhattan Project.
Lawrence Antos was a member of the Military Police at Los Alamos. His primary responsibility was checking the passes of civilians entering and exiting Los Alamos.
Walter Horne worked on the Manhattan Project as a chemist at the Y-12 Plant in Oak Ridge Tennesee from 1943 to 1945.