National Museum of Nuclear Science & History
Leston Stark was a staff worker at Los Alamos during the Manhattan Project.
Louis Rosen (1918-2009) was an American physicist. A native New Yorker and the son of Polish immigrants, Rosen was personally selected to work on the Manhattan project in Los Alamos while a graduate student in physics at the Pennsylvania State University.
H.W. was a consultant at Metallurgical Laboratory in Chicago during the Manhattan Project.
T. O’Rouark worked for the United States Engineer District Office.