Copy letter from Robert William Frederick Harrison, to William Henry Mahoney Christie, Fellow of the Royal Society, Astronomer Royal, Royal Observatory, Greenwich, S.E. The President [Lord Lister] has informed Harrison that he has not had sent to him one of the cards of invitation to the annual visitation to the Royal Observatory. Harrison has sent the President a card issued to his predecessor Mr Rix, for the President's information. Asks if Christie could arrange to have one or two of the cards forwarded to the President and whether he [Harrison] may use Rix's card or ask for a separate one. 1 June 1896