National Museum of Nuclear Science & History
Dr. Lauren Donaldson (1903-1998) was an ichthyologist who was hired by the Manhattan Engineering District at Hanford to monitor effects of radioactive contamination in the Columbia River.
Cecilia was a staff member at Los Alamos during the Manhattan Project.
Miesenheimer (spelling could also be “Misenheimer”) worked in the 100 B Area at Hanford during the Manhattan Project.