1. Letter from Linus Pauling to Willard F. Libby, United States Atomic Energy Commission Creator: Pauling, Linus, 1901-1994 Date: 10 May 1957 Genre: Letters (correspondence)
2. Letter from Willard F. Libby, United States Atomic Energy Commission to Linus Pauling Creator: U.S. Atomic Energy Commission.Libby, Willard F. Date: 2 May 1957 Genre: Letters (correspondence)