1. Letter from Francois Jacob to Marshall W. Nirenberg Creator: Jacob, Franc?ois, 1920-2013 Date: 30 January 1970 Genre: Letters (correspondence)
2. Letter from Francois Jacob, Institut Pasteur (France) to Marshall W. Nirenberg Creator: Institut Pasteur (Paris, France)Jacob, Franc?ois, 1920-2013 Date: 20 March 1962 Genre: Letters (correspondence)
3. Letter from Francois Jacob to Marshall W. Nirenberg Creator: Institut Pasteur (Paris, France)Jacob, Franc?ois, 1920-2013 Date: 20 December 1961 Genre: Letters (correspondence)