Box 1: 2 photocopied letters from Hopkins to Hans Kreb, 29 Apr. 1933 and 12 Jan. 1936, concerning Hopkins's offer of assistance in helping Krebs to obtain a position in his laboratory at Cambridge, the second letter discusses Hopkins's worries over filling the professorship in biochemistry in his department; envelope of dinner invitations; letter from Hopkins to his mother, 12 Apr. 1907, outlining his plans for his future; 5 letters from Hopkins to Dr. Stanislaw K. Kon of the National Dairy Institute at Reading concerning Hopkins's work with Vitamin B, 1934-1935; 7 letters to Prof. Dennis L. Fox concerning Fox's work on pigments, 1939-1947; 4 personal letters, 1856, 1862, 1870 and 1910; letter from Sydney W. Cole to Hopkins on Hopkins being appointed to the Chair of Biochemistry at Cambridge, 6 Nov. 1914; letter to Henry Dakin describing the work at the Cambridge Biological Laboratory, 18 May 1941; 2 letters to Norman Pirie, 30 October 1942 and 15 January 1944; letter to Dr Francis Hamer in which Hopkins expressed his regret that Hamer would not join the research at Cambridge; letter from Thomas Stevenson awarding Hopkins the Sir William Gull Memorial Fellowship, 11 Mar. 1891.
Box 2: Envelope of miscellaneous dinner invitations; letter to Hopkins from many of his former students, 1 Apr. 1933; letterbook, 1845; envelope of congratulations on Hopkins's 80th birthday; and envelope of congratulations on Hopkins's election to President of the Royal Society.
Box 1: File of miscellaneous notes and bibliographic citations; science notebook, 1937; notebook on tryptophane metabolism, 1912; 2 rough notebooks on science, 1 dated 1899, the other undated.
Box 2: Science notebook containing Hopkins' work on Glutathine, 18 Jan. 1937; science notebook beginning January 1899; notebook with records of daily weather temperatures, 1861, from Hopkins's father.
File of miscellaneous press cuttings; envelope containing press cuttings from Swedish newspapers about the Nobel Prizes, 1929 (Box 1).
Box 1: miscellaneous photographs and memorabilia; floor plan of the Biochemical Laboratory; file containing materials relating to Hopkins being awarded the Order of Merit, 1935; diary of Hopkins's father, 1856-1862; 2 envelopes of typescripts, including an autobiography of F.G. Hopkins, 24 pp.; envelope of miscellaneous photographs; envelope of typescripts, obituaries and reports; framed picture of Hopkins by Michael Perkins; 2 plays written by Hopkins whilst at the City of London School, 1875.
Box 2: envelope of obituaries; memorabilia - notice of election to the Royal Society, official birthday greetings, menus, important dinner invitations, genealogical notes, letters from Hopkins's father to his grandfather, press clippings, etc.; diary (incomplete), August 1919 - September 1916; 5 volumes of 'Brighter Biochemistry', a humorous publication produced by members of the Biochemistry Laboratory at Cambridge, 1924-1931.