261. Letter from Vivian H. Head to Linus Pauling Creator: Head, Vivian H. Date: 16 September 1958 Genre: Letters (correspondence)
262. Letter from Linus Pauling to Paul A. Marks Creator: Pauling, Linus, 1901-1994 Date: 12 May 1987 Genre: Letters (correspondence)
263. Letter from Linus Pauling to E. C. Kleiderer Creator: Pauling, Linus, 1901-1994 Date: 23 February 1951 Genre: Letters (correspondence)
264. Letter from Linus Pauling to Vivian H. Head Creator: Pauling, Linus, 1901-1994 Date: 3 October 1958 Genre: Letters (correspondence)
265. Letter from Linus Pauling to Warren Johnson Creator: Pauling, Linus, 1901-1994 Date: 24 September 1942 Genre: Letters (correspondence)