National Museum of Nuclear Science & History
Jacob H. Wiens was a nuclear physicist who worked on the Manhattan Project from 1943 to 1945. He later worked at the Lawrence Livermore National Laboratory where he interacted with Luis Alvarez.
Francis O’Sullivan worked for the United States Engineer District Office.
Waldo F. Christy was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.