Copy letter from Robert William Frederick Harrison to W D Barber, Hydrpgraphic Department, Admiralty, SW 'I shall be much obliged if you can let me have a copy of the latest Royal Warrant for the Board of Visitors of the Royal Observatory, Greenwich. We have usually had a copy sent here when it was issued; and at the moment, I am particularly desirous of having one in order to print it, in place of the Warrant of 1901, in a new edition of the Record of the Royal Society, which is being prepared.' 11 December 1911