National Museum of Nuclear Science & History
Ralph R. Taylor, Jr. served as a major in the 393rd Bombardment Squadron. He was the commander of the B-29 Full House, which served as a weather reconnaissance plane on the Hiroshima bombing mission, and the backup strike plane on Iwo Jima on the Nagasaki mission.
Alfred Pfanstiehl was a junior physicist at the Chicago Met Lab during the Manhattan Project. Pfanstiehl was a signatory of the Szilard Petition, an attempt to avert military use of the atomic bomb against Japan.
Hayes worked in the United States Engineer District Office.
