National Museum of Nuclear Science & History
Herbert M. Parker (1910-1984) was a British-American medical physicist. He worked at Chicago, Oak Ridge, and Hanford during the Manhattan Project, and is perhaps best known for inventing the rep (a precursor of the rad) and helping develop the rem to measure radiation dosage.
Mildred Johnston worked for the J.A. Jones Construction Company.
Helen Mulvihill was the commander officer of the Women’s Army Corps at Los Alamos during the Manhattan Project.