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Submarine Telegraph Cables: Business and Politics, 1838–1939

Published online by Cambridge University Press:  13 December 2011

Daniel R. Headrick  and
Pascal Griset
Daniel R. Headrick
Affiliation:
DANIEL HEADRICK is professor of social science and history atRoosevelt University in Chicago.
Pascal Griset
Affiliation:
PASCAL GRISET is professor of history at the Sorbonne and director of the Centre de Recherche en Histoire de l'Innovation in Paris.
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Abstract

International telecommunication is not only a business but also a political enterprise, the subject of great-power rivalries. In the late nineteenth century, British firms held a near monopoly, because Britain had more advanced industry, a wealthier capital market, and a merchant marine and colonial empire that provided customers for the new service. After the 1880s, they encountered increasing competition on the North Atlantic from American, German, and French firms. Elsewhere, the British conglomerate Eastern and Associated retained its hegemony until the 1920s. Following World War I, radiotelegraphy threatened the dominance of cables. In the 1930s, cable companies were almost bankrupted by the Depression and by competition from shortwave radio.

Type
Articles
Information
Business History Review , Volume 75 , Issue 3 , Autumn 2001 , pp. 543 - 578
Copyright
Copyright © The President and Fellows of Harvard College 2011

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References

1 The literature on submarine telegraphy and international telecommunications before the Second World War is surprisingly small. The three most recent books on the subject are: Headrick, Daniel R., The Invisible Weapon: Telecommunications and International Politics, 1851–1945 (New York, 1991)Google Scholar; Griset, Pascal, Entreprise, Technologie et Souverainteté: Les télécommunications transatlantiques de la France (XIXe-XXe siècles) (Paris, 1996)Google Scholar; and Hugill, Peter J., Global Communications since 1844: Geopolitics and Technology (Baltimore, 1999)Google Scholar. Of these three, only Griset's stresses the commercial aspects of cables. See also a short popular book by Standage, Tom, The Victorian Internet: The Remarkable Story of the Telegraphy and the Nineteenth Century's On-Line Pioneers (New York, 1998)Google Scholar, with chapters on submarine telegraphy.

2 Holzmann, Gerald J. and Pehrson, Bjöm, The Early History of Data Network (Los Alamitos, Calif., 1995)Google Scholar; Fédération Nationale des Associations de personnel des Postes et Télécommunications pour la Recherche Historique, La Télégraphie Chappe (Jarville-la-Malgrange, France, 1993)Google Scholar; Wilson, Geoffrey, The Old Telegraphs (London, 1976)Google Scholar.

3 There is a rich literature on the origins of land telegraphy. For the United States, the classic work is Thompson, Robert L., Wiring a Continent: The History of the Telegraph Industry in the United States, 1832–1866 (Princeton, 1947)Google Scholar; but see also Israel, Paul, From Machine Shop to Industrial Laboratory: Telegraphy and the Changing Context of American Invention, 1830–1920 (Baltimore, 1992)Google Scholar; and Blondheim, Menachem, News Over the Wires: The Telegraph and the Flow of Public Information in America, 1844–1897 (Cambridge, Mass., 1994)Google Scholar. This literature, however, says little about the cable business, which was peripheral to the interests of American managers. For Europe, see Flichy, Patrice, Une histoire de la communication moderne: Espace public et vie privée (Paris, 1991)Google Scholar.

4 Sir William Brooke O'Shaughnessy, “Memoranda relative to the experiments on the communication of Telegraphic Signals by induced electricity,” Journal of the Asiatic Society of Bengal (September 1839): 713–41; Gorman, Mel, “Sir William O'Shaughnessy, Lord Dalhousie and the Establishment of the Telegraph System in India,” Technology and Culture 12 (1971): 581–601CrossRefGoogle Scholar.

5 For a detailed and technical account of these early cables by pioneers in the field, see Bright, Charles, Submarine Telegraphs: Their History, Construction, and Working (London, 1898), 6–10Google Scholar; and Smith, Willoughby, The Rise and Extension of Submarine Telegraphy (London, 1891), 1–19Google Scholar.

6 “Correspondence Respecting the Establishment of Telegraphic Communications in the Mediterranean and with India,” Parliamentary Papers 1857–58 [2406], lx. See also Smith, Rise and Extension, 40–42.

7 See Exposé du développement des services postaux, télégraphiques et téléphoniques en Algérie depute la conquête (Algiers, 1930), 49–50Google Scholar; Bright, Submarine Telegraphs, 61; Haigh, Kenneth B., Cable Ships and Submarine Cables (Washington, D.C., 1968), 302–4Google Scholar. Siemens Brothers, owned by Werner and William Siemens and managed by William, was affiliated with the German firm of Siemens and Halske until 1880, when it was registered on the London Stock Exchange; after 1890, when Siemens und Halske became a public corporation, the two firms were legally separate, though largely owned by members of the Siemens family; see Siemens, Georg, History of the House of Siemens, vol. 1 (Freiburg, 1957), 59, 108–10Google Scholar.

8 “Correspondence Respecting the Establishment of Telegraphic Communications,” and “Further Correspondence Respecting the Establishment of Telegraphic Communications in the Mediterranean and with India,” Parliamentary Papers 1860 [2605], lxii; “History of Telegraph Communications with India (1858–1872), and an account of Joint Purse from 1874” (1897), in General Post Office Archives (London), 83/56, pp. 3–23. See Hoskins, Halford Lancaster, British Routes to India (New York, 1928), 373–97Google Scholar; and Headrick, Invisible Weapon, 19–20.

9 Hughes, Thomas P., Networks of Power: Electrification in Western Society, 1880–1930 (Baltimore, 1983), 14Google Scholar.

10 J. M. Adams, “Development of the Anglo-Indian Telegraph,” Engineering Science and Education journal (August 1997): 140–8. See also Hoskins, British Routes to India, 390–8; and Hugill, Global Communications, 39–41.

11 Coates, Vary T. and Finn, Bernard, A Retrospective Technology Assessment: Submarine Telegraphy, the Transatlantic Cable of 1866 (San Francisco, 1979), 3Google Scholar. Other, more speculative, cable projects never went beyond the granting of concessions; see Arcarons, Melcior, “L'Espagne et les connexions télégraphiques transatlantiques,” in Carreras, Albert, Giuntini, Andrea, and Merger, Michèle, eds., EUI Working Papers in History, Working Paper HEC No. 95/1: European Networks/Réseaux européens (Florence, 1995)Google Scholar.

12 On the Atlantic cable of 1857, see Coates and Finn, Retrospective Technology Assessment, 1–12; and Hugill, Global Communications, 29–31. On Cyrus Field, see Carter, Samuel, Cyrus Field: A Man of Two Worlds (New York, 1968)Google Scholar; and McDonald, Philip B., A Saga of the Seas: The Story of Cyrus W. Field and the Laying of the First Atlantic Cable (New York, 1937)Google Scholar.

13 On the Atlantic cable of 1858, see de Cogan, Donard, “Dr. E. O. W. Whitehouse and the 1858 Trans-Atlantic Cable.” History of Technology 10 (1985): 1–15Google Scholar; and Coates and Finn. Retrospective Technology Assessment, 13–17.

14 Great Britain, Submarine Telegraph Committee, Report of the Joint Committee appointed by the Lords of the Committee of Privy Council for Trade and the Atlantic Telegraph Company to Inquire into the Construction of Submarine Telegraph Cables; together with the Minutes of Evidence and Appendix (London, 1861)Google Scholar; also in Parliamentary Papers 1860 [2744], lxii. See also Coates and Finn, Retrospective Technology Assessment, 26–47.

15 Thompson, Wiring a Continent, 371–2 and 427–35; Hugill, Global Communications, 36–8.

16 On the Atlantic cable of 1866, see Dibner, Bern, The Atlantic Cable (Norwalk, Conn., 1959)Google Scholar; and Coates and Finn, Retrospective Technology Assessment, 21–5, and passim.

17 Thompson, Wiring a Continent, 434.

18 Read, Donald, The Power of News: The History of Reuters (London, 1999). 49–50CrossRefGoogle Scholar.

19 On news agencies, see Fenby, Jonathan, The International News Services (New York, 1986)Google Scholar.

20 On the connections between shipping and cables, see Graham, Gerald S., “Imperial Finance, Trade, and Communications. 1895–1914,” in The Cambridge History of the British Empire, vol. 3: The Empire-Commonwealth. 1870–1919, eds. Benians, E. A., Butler, James, and Carrington, C. E. (Cambridge, U.K., 1959)Google Scholar; and Headrick, Daniel R., The Tentacles of Progress: Technology Transfer in the Age of Imperialism, 1850–1940 (New York, 1988), ch. 2Google Scholar.

21 On cables and colonial control, see Cain, Robert, “Telegraph Cables in the British Empire, 1850–1900” (Ph.D. dissertation, Duke University, 1971)Google Scholar; Kubicek, Robert V., The Administration of Imperialism: Joseph Chamberlain at the Colonial Office (Durham, N.C., 1969)Google Scholar; Cell, John W., British Colonial Administration in the Mid-19th Century: The Policy-Making Process (New Haven, Conn., 1970)Google Scholar; and Headrick, Invisible Weapon, ch. 4.

22 There has been little work on telegraphy and diplomacy, apart from a few celebrated incidents like the Ems Telegram of July 1870 and the Zimmermann Telegram of 1917. But see Nickles, David Paull, “Telegraph Diplomats: The United States Relations with France in 1848 and 1870,” Technology and Culture 40 (Jan. 1999): 1–25CrossRefGoogle Scholar; and Kern, Stephen, The Culture of Time and Space, 1880–1918 (Cambridge, Mass., 1983), 263–76Google Scholar.

23 This is the theme of Kennedy, Paul M., “Imperial Cable Communications and Strategy, 1879–1914,” English Historical Review 86 (1971): 728–52CrossRefGoogle Scholar; Headrick, The Invisible Weapon, chs 5, 6, and 8; and Hugill, Global Communications, 39–51.

24 On the manufacture of cables, see Bright, Submarine Telegraphs; Lawford, G. L. and Nicholson, R. L., The Telcon Story, 1850, 1959 (London, 1950)Google Scholar; and Gay, Alfred, Les câbles sous-marins, vol. 1: Fabrication (Paris, 1902)Google Scholar.

25 On cable ships, see Haigh, Cableships and Submarine Cables, 17–25; and Garratt, Gerald R. M., One Hundred Years of Submarine Cables (London, 1950)Google Scholar.

26 Bright, Submarine Telegraphs, 164.

27 Brown, Frank J., The Cable and Wireless Communications of the World: A Survey of Present-Day Means of Communication by Cable and Wireless, Containing Chapters on Cable and Wireless Finance (London, 1927), 37–8Google Scholar.

28 Garratt, Gerald R. M., One Hundred Years of Submarine Cables (London, 1950), 40Google Scholar.

29 The Erlanger family, bankers in Frankfurt, had helped Julius Reuter to start his news agency in London in 1851. The Baron Emile d'Erlanger, a French member of the family, cooperated with Reuter in founding the SCTF, a company that was nominally French but in fact was owned and controlled by London financiers. See Bright, Submarine Telegraphs, 107; Read, The Power of News, 13, 54; and Griset, Les télécommunications, 50–4.

30 Minutes of evidence taken before the Inter-Departmental Committee on Cable Communications (London, 1902)Google Scholar, cited in Griset, Les télécommunications, 671, nn. 29–30, 34.

31 “Conseil d'administration P.Q.,” in Archives Nationales, Paris, cited in Griset, Les télécommunications, 59–71.

32 Ibid., in Griset, Les télécommunications, 76–81. On Jay Gould, see Klein, Maury, The Life and Legend of Jay Gould (Baltimore, 1986)Google Scholar.

33 “Conseil d'administration P.Q.,” in Archives Nationales, Paris, cited in Griset, Les télécommunications, 85–97.

34 “Conseil d'administration C.F.C.T.,” Archives Nationales, Paris, cited in Griset, Les télécommunications, 113–23, 236–9.

35 The most important source on the German telegraph cables is Kunert, Artur, Geschichte der deutschen Fernmeldekahel, vol. 2: Telegraphen-Seekabel (Cologne-Mülheim, 1962)Google Scholar. See also Lenschau, Thomas, Das Weltkabelnetz (Frankfurt, 1908)Google Scholar; and Lesage, Charles, La rivalité anglo-germanique. Lea câbles sous-marins allemands (Paris, 1915)Google Scholar. See also Headrick, Invisible Weapon, 81–2.

36 Kunert, Geschichte der deutschen Fernmeldekabel, 203–6, 228–53, 292–301. See also Röper, August, Die Unterseekabel (Leipzig, 1910)Google Scholar; and Thurn, Hugo, Die Seekabel unter besonderer Berücksichtigung der deutschen Seekabeltelegraphie. In technischer, handels-wirtschaftlicher, verkehrspolitischer und strategischer Beziehung dargestellt (Leipzig, 1909)Google Scholar.

37 Henry, ColonelMallock, Archibald, Report on the Indo-European Telegraph Department, being a History of the Department from 1863 to 1888 and a Description of the Country through which the Line Passes, 2nd ed. (Calcutta, 1890)Google Scholar; Goldsmid, Frederick J., Telegraph and Travel: A Narrative of the Formation and Development of Telegraphic Communication between England and India (London, 1874)Google Scholar; Parkinson, J. C., The Ocean Telegraph to India: A Narrative and a Diary (Edinburgh, 1870)Google Scholar.

38 There are two corporate histories of the Eastern and Associated Companies (now called Cable & Wireless): Baglehole, K. C., A Century of Service: A Brief History of Cable & Wireless Ltd., 1868–1968 (Welwyn Garden City, 1970)Google Scholar; and Barty-King, Hugh, Girdle Round the Earth: The Story of Cable and Wireless and its Predecessors to Mark the Group's Jubilee, 1929–1979 (London, 1979)Google Scholar. See also Headrick, Invisible Weapon, 35–40.

39 Barty-King, Girdle Round the Earth, 25, 53–4, 80. Headrick, Invisible Weapon, 36–7.

40 On the Pacific cable, see Thompson, Graham M., “Sandford Fleming and the Pacific Cable: The Institutional Politics of Nineteenth-Century Telecommunications,” in Canadian Journal of Communications 15 (1990): 64–75Google Scholar; Johnson, George, ed., The All-Red Line: The Annals and Aims of the Pacific Cable Project (Ottawa, 1903)Google Scholar; and Hugill, Global Communications, 45–6.

41 Telegraf-Selskab, Store Nordiske, The Great Northern Telegraph Company: An Outline of the Company's History, 1869–1969 (Copenhagen, 1969)Google Scholar; Ahvenainen, Jorma, The Far Eastern Telegraphs: The History of Telegraphic Communications between the Far East, Europe and America before the First World War (Helsinki, 1981), 21–46Google Scholar.

42 Scrymser, James A., Personal Reminiscences of James A. Scrymser, in Times of Peace and War (Eastern, Penn., 1915), 92–7Google Scholar; “Submarine Cable Communications in Time of War: Incidents during the Spanish-American War,” report from the General Post Office to the War Office (Apr. 1899), in Public Record Office (Kew) WO106/291, 30–4; Sandes, Edward W. C., The Royal Engineers in Egypt and the Sudan (Chatham, 1937), 279–87, 415–16Google Scholar; Kennedy, Paul, “Imperial Cable Communications and Strategy, 1870–1914,” English Historical Review 86 (1971)Google Scholar; and Headrick, Invisible Weapon, 82–9.

43 Saward, G., Deep-sea Telegraphs: Their Past History and Future Progress (London, 1861)Google Scholar; Griset, Les télécommunications, 44–6; Headrick, Invisible Weapon, 15–16; Exposé du développement des services postaux, télégraphiques et téléphoniques en Algérie (Algiers, 1930), 49–50Google Scholar; Charles Bright, Submarine Telegraphs, 66.

44 “Conseil d'administration” and “Assemblée générale, S.F.T.S.M., 1889–1894,” “Assemblée générale P.Q., 1895,” and “Conseil general C.F.T.C, 1897–1900,” Archives Nationales, Paris, cited in Griset, Les télécommunications, 103–16, 238–9; Charbon, P., “Développement et declin des réseaux télégraphiques, 1840–1940,” in Recherches sur l'histoire des télécommunications 1 (Nov. 1986)Google Scholar; Allain, J. C., “L'indépendence câblière de la France au début du XXème siècle,” in Guerres mondiales et conflits contemporains 166 (1992), 116–31Google Scholar.

45 Scrymser, Personal Reminiscences, 67–70; Denny, Ludwell, America Conquers Britain: A Record of Economic War (London and New York, 1930), 369–70Google Scholar; Clark, Keith, International Communications: The American Attitude (Ph.D. thesis, Columbia University, New York, 1931), 151Google Scholar.

46 The Hong Kong–Manila cable was laid by the Eastern Extension Company a few months before the Spanish-American War. See Scrymser, Personal Reminiscences, 98.

47 Tribolet, Leslie B., The International Aspects of Electrical Communications in the Pacific Area (London, 1929)Google Scholar; Alexander, W. D., “The Story of the Trans-Pacific Cable,” Hawaii Historical Journal 18 (Jan. 1911): 57–60Google Scholar; Ahvenainen, The Far Eastern Telegraphs, 158–9; U.S. Congress, Senate, Committee on Interstate Commerce, Cable-Landing Licenses: Hearings (15 Dec. 1920–11 Jan. 1921); and U.S. Congress, House, Committee on Interstate and Foreign Commerce, Cable-Landing Licenses: Hearings (11–13 May 1921).

48 Hennig, R., “Die deutsche-niederländische Telegraphenallianz im Fernen Osten,” Grenzboten 65 (Apr.–June 1906): 289–93Google Scholar; Meyer, Günther, “German Interests and Policy in the Netherlands East Indies and Malaya, 1870–1914,” in Moses, John A. and Kennedy, Paul M., eds., Germany in the Pacific and Far East, 1870–1914 (St. Lucia, Queensland, 1977), 45Google Scholar; Kunert, , Geschichte der deutschen Fernmeldekabel, vol. 2: 319–36Google Scholar; Ahvenainen, Far Eastern Telegraphs, 175–84.

49 Kunert, , Geschichte der deutschen Fernineldekabel, vol. 2: 261–74, 345Google Scholar; Lesage, La rivalité anglo-germanique, 84–8, 101–22, 155–60, 247–58.; Allain, Jean-Claude, Agadir 1911: Une crise impérialiste en Europe pour la conquête du Maroc (Paris, 1976), 133–5Google Scholar.

50 Griset, Les télécommunications, 240–1; Garratt, One Hundred Years, 30; Haigh, Cableships and Submarine Cables, 316–21; Ivan S. Coggeshall, “Annotated History of Submarine Cables and Overseas Radiotelegraphs, 1851 to 1934. With Special Reference to the Western Union Company and with an Introduction dated 1984,” manuscript written in 1934, cited with permission of the author.

51 “Conseil d'administration C.F.T.C. 1909–14,” in Archives Nationales, Paris, cited in Griset, Les télécommunications, 256–60, 376–78; Allain, Agadir 1911, 133–35; United States Congress, Senate, Committee on Interstate Commerce, 66th Congress, 3rd Session, on S. 4301, A Bill to Prevent the Unauthorized Landing of Submarine Cables in the United States (15 Dec. 1920 and 11 Jan. 1921).

52 Letters and memoranda, 1917–18, in Records of the Department of State, U.S. National Archives 851/72, M560, Roll 140, cited in Griset, Les télécommunications, 268–78. On cables in World War I, see also Hugill, Global Communications, 46–8; and Headrick, Invisible Weapon, 138–50.

53 Letters and memoranda, 1919–21, in Records of the Department of State, U.S. National Archives 851/73, M560, Roll 141; and U.S. Congress, A Bill to Prevent the Unauthorized Landing of Submarine Cables in the United States, cited in Griset, Les télécommunications, 426–46.

54 Griset, Les télécommunications, 403.

55 U.S. Congress, A Bill to Prevent the Unauthorized Landing of Submarine Cables in the United States.

56 U.S. Federal Communications Commission, “Report of the Federal Communications Commission on the International Telegraph Industry submitted to the Senate Interstate Commerce Committee Investigating Telegraphs,” in United States Senate, Appendix to Hearings before Subcommittee of the Committee on Interstate Commerce, 77th Congress, 1st Session, part 2 (Washington, D.C., 1940), 476Google Scholar. See also Tulchin, Joseph S., The Aftermath of War: World War I and U.S. Policy toward Latin America (New York, 1971), 208–22Google Scholar; Schreiner, George A., Cable and Wireless and their Role in the Foreign Relations of the United States (Boston, 1924), 66–78Google Scholar; Clark, International Communications, 155–6; Denny, America Conquers Britain, 370–1; and Tribolet, The International Aspects, 46–56.

57 Minutes of evidence taken before the inter-departmental committee on cable communications (London, 1902), 82Google Scholar; and “Conseil d'administration” and “Assemblée générale extraordinaire C.F.C.T., 1918–1927,” in Archives Nationales, Paris, cited in Griset, Les télécommunications, 456–67.

58 See, for example, Aitken, Hugh, Syntony and Spark: The Origins of Radio (New York, 1976)Google Scholar; and The Continuous Wave: Technology and American Radio, 1900–1932 (Princeton, 1985)Google Scholar; Pocock, Rowland F., The Early British Radio Industry (Manchester, 1988)Google Scholar; Griset, Les télécommunications, chs. 7–9, 12–14; Cazenoble, J., Les origines de la télégraphie sans fil (Paris, 1981)Google Scholar; and Bussey, Gordon, Wireless: The Crucial Decade. History of the British Wireless Industry, 1924–34 (London, 1990)CrossRefGoogle Scholar.

59 Douglas, Susan, Inventing American Broadcasting, 1899–1922 (Baltimore, 1987)Google Scholar; Howeth, Captain Linwood S., History of Communications-Electronics in the United States Navy (Washington, D.C., 1963)Google Scholar.

60 Coates and Finn, Retrospective Technology Assessment, 157–65.

61 Headrick, Invisible Weapon, 200–1; Griset, Les télécommunications, 497; Kunert, , Geschichte der deutschen Fernmeldekabe, vol. 2., 374–82Google Scholar; Haglund, H. H., “Ocean Cable Crossroads, Horta, Azores Islands,” Western Union Technical Review 7 (July 1953): 108–9Google Scholar; de Cogan, Donard, “British Cable Communications (1851–1930): The Azores Connection,” Arquipélago, numero especial Relaçoes Açores-Gra Bretanha (Ponta Delgada, Azores, 1988), 187–8Google Scholar.

62 Headrick, Daniel R., “Shortwave Radio and its Impact on International Telecommunications between the Wars,” History and Technology 11 (1994): 21–32CrossRefGoogle Scholar.

63 Baker, W. J., A History of the Marconi Company (London, 1970), 230–2Google Scholar; Barty-King, Girdle Round the Earth, 203–10; Headrick, Invisible Weapon, 206–8.

64 “Conseil d'administration C.F.C.T., 1928,” in Archives Nationales, Paris; and “Projet pour la création de la Compagnie française des communications électriques extérieures, juillet 1928,” in Archives Paribas, Dossier Wilbratte, cited in Griset, Les télécommunications, 508–13.

65 Sobel, Robert, ITT: The Management of Opportunity (New York, 1982), 60–9Google Scholar; Ivan Stoddard Coggeshall, “Annotated History of Submarine Cables and Overseas Radiotelegraphs, 1851 to 1934, with special reference to The Western Union Telegraph Company and with an Introduction dated 1984” (manuscript in possession of Donard de Cogan, cited with gratitude), 80; Shoup, G. Stanley, “The Control of International Radio Communication, Annals of the American Academy of Political and Social Sciences 142 (Mar. 1929): 103Google Scholar.

66 U.S. Congress, Senate, Committee on Interstate Commerce, “Hearings before the Committee on Interstate Commerce of the United States Senate, May 1929–Feb. 1930, on S.6, a bill to provide for the regulation, by a permanent Commission on Communications, of transmission of intelligence by wire or wireless.”

67 “Assemblée générale C.F.C.T., 1929–1934,” in Archives Nationales, Paris, cited in Griset, Les télécommunications, 531–33.

68 “Agreements and Commitments with North American Companies,” in Cable & Wireless archives B1/157, cited in Headrick, Invisible Weapon, 211.

69 Letters and memoranda, 1929–35, in Cable & Wireless archives, London, cited in Headrick, Invisible Weapon, 211–13. On the Zimmermann Telegram, see Tuchman, Barbara, The Zimmermann Telegram (New York, 1965)Google Scholar; and Beesly, Patrick, Room 40: British Naval Intelligence, 1914–1918 (London, 1982), ch. 13Google Scholar.

70 “Strategical requirements in regard to cable communications,” in Cable & Wireless archives, B1/112, cited in Headrick, Invisible Weapon, 212.

71 Committee of Imperial Defence, Imperial Communications Committee, Strategic Cables Sub-Committee, minutes and reports, 1932–33, in Public Record Office (Kew), CAB 35/45, cited in Headrick, Invisible Weapon, 212.