Included are letters by:
Louis de Broglie, Ernest Rutherford (B/53),
A.E Housman, J. E. B. Seely (B/54)
E. D. Adrian, C.G. Barkla, Dorothea, Lady Charnwood, Lilly Frazer, Kathleen, Lady Rayleigh (B/55).
C. A. Alington, H. L. Paget, H. F. Stewart (B/56)
Included are letters from: Lady Betty Balfour (B/64) Louis de Broglie (B/63), Dorothea, Lady Charnwood (B/62), Lawrence Dundas, Earl of Ronaldshay (B/63), George Stuart Gordon (B/64), Graeme Haldane (B/65), Charles Hardinge, 1st Baron Hardinge of Penshurst (B/64), Gareth R. V. Jones (B/64), Sir Oliver Joseph Lodge (B/62), James William Lowther, 1st Viscount Ullswater (B/65), Victor A. G. R. Lytton, 2nd Earl of Lytton (B/63), Desmond MacCarthy (B/64), Paul E. Paget (B/62), John H. G. Randolph (B/63), Lady Marjorie Sinclair, Baroness Pentland (B/62, B/63 and B/65), Sir Annesley Ashworth Somerville (B/65), Alexandra, Lady Studd (B/64).
Included are letters from and R. B. Haldane (C/7, C/10), Sir T. E. Thorpe (C/7), A. J. Balfour (C/8, C/10), Stanley Baldwin (C/8), Sir Henry Newbolt, (C/8) S.A. Arrhenius (C/9), Arthur John Bigge, 1st Baron Stamfordham (C/11), Louis de Broglie (C/11), George, 1st Viscount Cave (C/10), Sir Stephen Gaselee (C/12), Gustav VI Adolf, King of Sweden (C/12), Elizabeth Haldane (C/11), Sir Oliver Joseph Lodge (C/10), Charles James Longman (C/9), James William Lowther, 1st Viscount Ullswater (C11), Ernest Bowman Ludlam (C/9), Hugh Macnaghten (C/9), Albert Mansbridge (C/8), Robert O. A. Milnes, 1st Marquess of Crewe (C/8, C/12); Alfred Chilton Pearson (C/9).