Modifications and additions in the provisions of the Lisbon Telegraph Regulations made necessary by the London revision (1912) of the Radiotelegraphic Convention and Regulations. Translated by G.R. Neilson. London, 1912
International Telecommunication Convention, Telephone regulations annexed to the International Telecommunication Convention, Madrid, 1932. London, 1933
International Telecommunication Convention, Telegraph regulations annexed to the International Telecommunication Convention: Final protocol to the Telegraph Regulations. London, 1935
Goldsmid, Sir Frederic John, Telegraph and travel: a narrative of the formation and development of telegraphic communication between England and India... London: Macmillan, 1874