'Diagram Battle Signals' by Commander J. H. Brown. 1859. Contains 5 basic signals for use as Battle Signals.
'Diagram Battle Signals' by Commander J. H. Brown. 1859. Contains 5 basic signals for use as Battle Signals. There are an additional 8 symbols available if more than 20 signals are required. Also with a letter to P. H. Colomb, London, 16 May 1863. [Number 34]