Correspondence of Presidents and Officers of the Royal Society Varied collection of correspondence, mostly related to activities carried out in office. Includes the following officers: A/1-A/5 Sir Henry Dale A/6 Frederick William Lanchester A/7 Henry George Lyons A/8 Frank Edward Smith A/9-A/11 William Henry Bragg A/12-A/13 Robert Robinson A/14-16 Thomas Ralph Merton A/17-19 A C G Egerton A/20 H L Penfold A/21 H G Lyons A/22 A C Seward A/23 H T Tizard A/24-28 A V Hill For further letters and papers of officers, see material under reference number OM. 1925-1950