281. DNA: Test of Structure? [Editorial letter] Creator: Crick, Francis, 1916-2004 Date: 1970 Publisher: American Association for the Advancement of Science Genre: ArticlesLetters (correspondence)
282. Evidence for the Pauling-Corey alpha-Helix in Synthetic Polypeptides [Editorial letter] Creator: Cochran, WilliamCrick, Francis, 1916-2004 Date: 9 February 1952 Publisher: Nature Publishing Group Genre: ArticlesLetters (correspondence)
283. Selfish DNA [Editorial letter] Creator: Orgel, Leslie E.Sapienza, C.Crick, Francis, 1916-2004 Date: 18 December 1980 Publisher: Nature Publishing Group Genre: ArticlesLetters (correspondence)
284. Letter from Francis Crick to Marianne Grunberg-Manago Creator: Crick, Francis, 1916-2004 Date: 17 June 1976 Genre: Letters (correspondence)
285. Letter from Leonard S. Lerman to Francis Crick Creator: Lerman, Leonard S. Date: 27 October 1964 Genre: Letters (correspondence)
286. Letter from Francis Crick to H. Gobind Khorana Creator: Crick, Francis, 1916-2004 Date: 14 November 1968 Genre: Letters (correspondence)
287. Letter from H. Gobind Khorana to Francis Crick Creator: Khorana, Har Gobind, 1922-2011 Date: 8 November 1968 Genre: Letters (correspondence)
288. Letter from Francis Crick to Leonard S. Lerman Creator: Crick, Francis, 1916-2004 Date: 6 November 1964 Genre: Letters (correspondence)
289. Letter from Francis Crick to H. Gobind Khorana Creator: Crick, Francis, 1916-2004 Date: 6 March 1969 Genre: Letters (correspondence)
290. Letter from Francis Crick to H. Gobind Khorana Creator: Crick, Francis, 1916-2004 Date: 9 January 1967 Genre: Letters (correspondence)