Document signed by Sir John Lowther, Admiralty Commissioner, bap.1642-1706 and Henry Priestman, Admiralty Commissioner, 1647-1712
Enclosing a copy of a letter from Viscount Sydney Master General of HM Ordnance in which alterations to Bomb Vessels are required and requesting the assistance of personnel at the Royal Yards in aiding persons appointed by Viscount Sydney in installing mortars.