Submarine telegraphs; their history, construction, and working. Founded in part on Wèunschendorff's 'Traitâe de tâelegraphie sous-marine' and compiled from authoritative and exclusive sources (1898)
Bright, Charles, 1863-1937 · London, C. Lockwood and son · leaf 215
[Plate IX. [To face p. 142.
Cables, Submarine
Internet Archive · Northeastern University, Snell Library · Public domain (published before 1931). Free to use for anything.
