Rogers and Black's American semaphoric signal book, for the use of vessels employed in the United States naval, revenue and merchant service [microform] /
Rogers, Henry J.,1811-1879.
Baltimore, Md. : F. Lucas, jr.,
[185-?]
Pub. 1845 under title: The telegraph dictionary, and seamen's signal book ...
Sabin 72676.
Sabin Group 118.
Microfiche.
Merchant marine
Cipher and telegraph codes