National Museum of Nuclear Science & History
Donald Flanders was an American mathematician who worked on the Manhattan Project at Los Alamos. Flanders was a group leader in the Theoretical Division headed by Hans Bethe.
George Placzek was a Czech physicist. He was born in Brno, Moravia, which was then part of Austria-Hungary but today is in the Czech Republic.
R. A. Coster worked for the Union Carbide & Carbon Corporation.
Valda B. Lemke was a laboratory assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.