National Museum of Nuclear Science & History
Fredrika Lewis was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
A Missourian by birth, W.K. ("Mac") MacCready held undergraduate and graduate degrees in physical chemistry from the University of Alabama.
D. M. Ellett is a mechanical engineer who joined the Manhattan Project after the end of World War II.
