National Museum of Nuclear Science & History
Roderick W. Spence was an American physical chemist who worked on the Manhattan Project at Los Alamos.
Ralph B. Larsen was a machinist at Los Alamos during the Manhattan Project. His wife, Ruth Anderson, also worked at Los Alamos.
L. W. Wendlandt served in the 390th Air Service Group.
Joyce M. Hopkins was a research assistant in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
