National Museum of Nuclear Science & History
Harold F. Lindau served in the 393rd Bombardment Squadron.
Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Hatfield worked in the United States Engineer District Office.
Albert Wulff, Jr. worked for the United States Engineer District Office.
Valda B. Lemke was a laboratory assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.