Here is an often cited panoramic history of the telegraph which discusses the principal telegraph firms and the key persons within them. Throughout his work, Reid stresses the business and economic aspects of marketing this remarkable scientific invention. The importance of The Telegraph in America as a classic reference in the field is under-scored by the fact that the author was active in telegraphy throughout the period he discusses. He thus had a personal knowledge of persons and events under examination.

Included are the Minutes (or Procès-verbal) of the Council from its first meeting, Paris, January 16, 1920, to the session, ; the budget for the 3d- financial period (1921- ) in 1920, no. 7, 1921, no. 9, 1923- no. 1 of each year; statements of the "Present situations as regards international engagements registered with the Secretariat"; Saar Basin, periodical and other reports and papers; reports on the financial reconstruction of Austria, and of Hungary; and many other reports and papers.