Autograph Letter Signed, to the Hon. G.K.Elphinstone [later Admiral Lord Keith], Secretary to His Royal Highness The Prince of Wales for Scotland, in Edinburgh, thanking him for Prince William’s letter, agreeing to Elphinstone remaining in Scotland for a while longer. 1 page 9 x 7 inches, fine, with the original wrapper. London, 19 March 1787. Henry Lyte, Secretary and Keeper of the Privy Seal to the Prince of Wales, and treasurer of His Royal Highness’s Revenue.