Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to the Honorary Secretary of the South Slav Entente Committee; the Royal Society of Literature, 2 Bloomsbury Square, W.C.l. Informs the Honorary Secretary that the disposal of the subject index of the Royal Society Catalogue of Scientific Papers and of the International Catalogue of Scientific Literature is not within the control of the Society. Suggests that they communicate with the Syndics of the Cambridge University Press as to the first and with Dr. [Henry] Forster Morley as to the second. 6 December 1920