National Museum of Nuclear Science & History
Dagmar Elizabeth von Lieven was born in 1915 to a prominent Prussian family. Her family fled from Russia, shortly after the Bolshevik Revolution.
Bradford worked at the 300 Area at Hanford during the Manhattan Project.
General Lyle Edward “Skip” Seeman was a United States Army Corps of Engineers Officer. He was also a Manhattan Engineering District Special Assistant to General Groves at Los Alamos On May 3, 1945 Col Seeman was appointed by General Leslie Groves to be his Corps of Engineers liaison at Los Alamos.