411. Satirical note announcing the death of the DNA helix Creator: Franklin, RosalindGosling, Raymond Date: 18 July 1952 Genre: NotesObituaries
412. 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)
413. [Notebook entry on] "DNA" Creator: Crick, Francis, 1916-2004 Date: 14 December 1951 Genre: Laboratory notebooksExcerpts
414. Letter from Vladimir Vand to William Cochran and Francis Crick Creator: Vand, Vladimir Date: 13 December 1951 Genre: Letters (correspondence)
415. The Physical Properties of Cytoplasm: A Study by Means of the Magnetic Particle Method, Part I. Experimental Creator: Hughes, A. F. W.Crick, Francis, 1916-2004 Date: 1950 Publisher: The Academic Press Genre: Articles
416. Biochemical Work on Lysozyme Creator: Crick, Francis, 1916-2004 Date: [ca. 1950-1951] Genre: Notes
417. The Physical Properties of Cytoplasm: A Study by Means of the Magnetic Particle Method, Part II. Theoretical Treatment Creator: Crick, Francis, 1916-2004 Date: 1950 Publisher: The Academic Press Genre: Articles
418. Letter from A. V. Hill to Francis Crick Creator: Hill, A. V. Date: 11 March 1949 Genre: Letters (correspondence)
419. Interim Note: Studies on the Physical Properties of the Cytoplasm of Cells in Tissue Culture Creator: Crick, Francis, 1916-2004 Date: [March 1949] Genre: ReportsLaboratory notes
420. Letter from Maurice H. F. Wilkins to Francis Crick Creator: Wilkins, Maurice, 1916-2004 Date: [ca. 1948-1953 (Friday)] Genre: Letters (correspondence)