241. Letter from Francois Gros to Francis Crick Creator: Gros, Francois Date: 9 April 1969 Genre: Letters (correspondence)
242. Letter from Joshua Lederberg to Francis Crick Creator: Lederberg, Joshua Date: 24 March 1965 Genre: Letters (correspondence)
243. Letter from Severo Ochoa to Francis Crick Creator: Ochoa, Severo, 1905-1993 Date: 13 February 1967 Genre: Letters (correspondence)
244. Letter from Severo Ochoa to Francis Crick Creator: Ochoa, Severo, 1905-1993 Date: 15 November 1962 Genre: Letters (correspondence)
245. Letter from Alexander Rich to Francis Crick Creator: Rich, Alexander Date: 4 January 1965 Genre: Letters (correspondence)
246. Letter from Francis Crick to George D. Pappas Creator: Crick, Francis, 1916-2004 Date: 5 May 1969 Genre: Letters (correspondence)
247. Letter from Francis Crick to Severo Ochoa Creator: Crick, Francis, 1916-2004 Date: 21 February 1967 Genre: Letters (correspondence)
248. Letter from Francis Crick to George D. Pappas Creator: Crick, Francis, 1916-2004 Date: 29 May 1969 Genre: Letters (correspondence)
249. Letter from Francis Crick to Severo Ochoa Creator: Crick, Francis, 1916-2004 Date: 5 December 1962 Genre: Letters (correspondence)
250. Letter from George D. Pappas to Francis Crick Creator: Pappas, George D. Date: 12 May 1969 Genre: Letters (correspondence)
251. Letter from Francis Crick to Severo Ochoa Creator: Crick, Francis, 1916-2004 Date: 21 September 1962 Genre: Letters (correspondence)
252. Letter from Francis Crick to James D. Watson Creator: Crick, Francis, 1916-2004 Date: [7 January 1965] Genre: Letters (correspondence)
253. Letter from Francis Crick to Henry M. Sobell Creator: Crick, Francis, 1916-2004 Date: 12 November 1975 Genre: Letters (correspondence)
254. Letter from Francis Crick to Karl Popper Creator: Crick, Francis, 1916-2004 Date: 13 August 1976 Genre: Letters (correspondence)
255. Letter from Linus Pauling to Francis Crick Creator: Pauling, Linus, 1901-1994 Date: 19 September 1974 Genre: Letters (correspondence)
256. Letter from Henry M. Sobell to Francis Crick Creator: Sobell, Henry M. Date: 30 October 1975 Genre: Letters (correspondence)
257. Letter from Karl Popper to Francis Crick Creator: Popper, Karl Date: 6 August 1976 Genre: Letters (correspondence)
258. Letter from Francis Crick to Peter Medawar Creator: Crick, Francis, 1916-2004 Date: 17 February 1977 Genre: Letters (correspondence)
259. Letter from Francis Crick to Peter Medawar Creator: Crick, Francis, 1916-2004 Date: 21 April 1977 Genre: Letters (correspondence)
260. Letter from Edward L. Tatum to Francis Crick Creator: Tatum, Edward L. (Edward Lawrie), 1909-1975 Date: 21 April 1966 Genre: Letters (correspondence)