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 341
[Plate XV. … Fig. 7. —The Foliage, Flower, and Fruit of the Isonandra Gutta. [To face f. 254.
Cables, Submarine
Internet Archive · Northeastern University, Snell Library · Public domain (published before 1931). Free to use for anything.
