Donald W. Vester

Leona Marshall Libby

Leona Woods, later Leona Woods Marshall and Leona Marshall Libby, was perhaps the most well-known woman scientist working on the Manhattan Project.

W. H. Penny

William “Bill” Harris Penny’s parents came to the United States from Newfoundland in 1910.

D.C. Sawyer

Rachel Gilbreath

Rachel Gilbreath was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.