Recent improvements in ship signal-lights : letter to Messrs. Chance Brothers & Co., Lighthouse Engineers, Birmingham, in reply to paper of Mr. Kenward on recent improvements in ship signal-lights, from William Harvie, Patent ship lamp maker, 222 Broomielaw, Glasgow.
Kenward, James.
Glasgow : Hay, Nisbet & Co., printers, 38 Stockwell Street,
[1988]
Imprint from colophon.
Title from cover.
Ships' lights
Signals and signaling