Collection search - Map of the world's submarine cables and principal telegraph lines. Telegraph and Signal Service, Department of Public Works, Dominion of Canada. Sir Hector L. Langevin, C.B.-K.C.M.G., Minister of Public Works. F.N. Gisborne, M.I.T.E.E.-F.R.S.C., & c., Superintendent. Projected by F.N. Gisborne. Drawn by Gust. Smith. 1883. Lithographed by G.E. Desbarats & Co., Montreal. [cartographic material]

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