GEORGE III (1738-1820), King of the United Kingdom of Great Britain and Ireland. Autograph letter signed to his son Frederick, Duke of York, Weymouth, 12 August 1796, approving Frederick's actions in a number of matters relating to the armed forces, one page, 4to, with a copy of Frederick's letter of 10 August; with a document signed and a letter signed, the first a warrant to pay the salary of an assistant to Nevil Maskelyne, the Astronomer Royal, 5 July 1771, the second a letter signed (with a scrawl) to Mr Ryder, 5 June 1810, together two page, 4to and folio;