Specimens of submarine telegraph cables viz 1851-62: Dover to Calais 1851; Dover to Ostend 1853
Specimens of submarine telegraph cables viz 1851-62: Dover to Calais 1851; Dover to Ostend 1853, Spezzia to Corsica 1854; Cromer to Hanover 1858; Cromer to Denmark 1859; Folkestone to Boulogne 1859; Beachy Head to Dieppe 1861, various makers, England, 1851-1862