Laying wires, Foilhummerum Bay, near Valentia, Ireland, 21 July 1866.
© Science Museum / Science & Society Picture Library
Lithograph after Robert Dudley from 'The Atlantic Telegraph', a book by W H Rusell with 26 illustrations by Dudley, published in 1866. This shows the 'Caroline' and other boats engaged in laying the earth wire in preparation for the transatlantic telegraph cable, which was landed from the 'Great Eastern' the following day. The cable laid from Valentia to Trinity Bay in Newfoundland established the first permanent telegraph link acros the Atlantic, reducing communication times from the length of a sea voyage to a few seconds.