The Telegraph Dictionary, and Seamen's Signal Book: Adapted to Signals by Flags Or Other Semaphores; and Arranged for Secret Correspondence, Through Morse's Electro-magnetic Telegraph: for the Use of Commanders of Vessels, Merchants, &c

Rogers and Black's American Semaphoric Signal Book: For the Use of Vessels Employed in the United States Naval, Revenue and Merchant Service

American Code of Marine Signals ...