National Museum of Nuclear Science & History
Manuel Schwartz was a physicist. He worked at Los Alamos as a civilian employee from about July 6, 1944, until January or February 1946.
Johnson worked at the 300 Area at Hanford during the Manhattan Project.
Murray Peshkin (1925-2017) was an American physicist. Peshkin was recruited by the Army to work at Los Alamos during World War II.