'The Sailing and Fighting Instructions or Signals as they are observed in the Royal Navy of Great Britain with the additional signals of the Admirals Mathews, Rowley, Medley and byng', Trelawny's Mediterranean Signal Book, signed by Trelawny, n.d.
'The Sailing and Fighting Instructions or Signals as they are observed in the Royal Navy of Great Britain with the additional signals of the Admirals Mathews, Rowley, Medley and byng', Trelawny's Mediterranean Signal Book, signed by Trelawny, n.d.