Included are letters from John William Strutt, 3rd Baron Rayleigh; J. H. Poynting, Baron Kelvin of Largs; Sir Archibald Geikie; Sir William Crookes; Robert Cary Gilson; J. W L. Glaisher; Sir Richard Claverhouse Jebb; Henry Luke Paget; and a manuscript poem entitled ’Sir Joseph Thomson and the lons’, dedicated to Thomson and signed 'H.D.E. [M.R.I.]’.
Included are letters from Sir Arthur Schuster (C/2-C/4), Sir J. G. Frazer (C/3, C/5), Walter Leaf (C/5), Sir F. W. Dyson (C/6), A. Bonar Law (C/6), Sir Julian Stafford Corbett (C/5), H. A. L. Fisher (C/6), Sir Henry Head (C/5), Henry Jackson (C/4), Henry Luke Paget (C/2).
Including letters from Henry Luke Paget, (B/44); Elma Katie Paget, (B/44); George Edmund Paget, (B/42); Charles E. Paget (B/42); Mary Maud Paget (B/44); A. J. Meyrick Paget (B/42 and 44); Owen Frank Paget (B/42-43); Stella Paget (B/43); Edith Gittings Reid (B/43).
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)