The American electro magnetic telegraph: with the reports of Congress,

Mode of access: Internet.

American telephone & telegraph co-Comptroller's department-Chief statistician's division Statement regarding character and construction of general business curve since 1877.

Mode of access: Internet.

The propagation of electric currents in telephone and telegraph conductors; a course of post-graduate lectures delivered before the University of London,

Mode of access: Internet.

General regulations for working the absolute block telegraph on double lines of railway.

Mode of access: Internet.

Essays on slavery : re-published from the Boston Recorder & telegraph, for 1825 /

Of these essays six numbers are by Vigornius [i.e. S.M. Worcester], one by a Carolinian, one by Philo, and nine by Hieronymus.

The secret corresponding vocabulary; adapted for use to Morse's electro-magnetic telegraph ...

Mode of access: Internet.

Description of the universal telegraph for day and night signals /

Mode of access: Internet.

United States telegraph extra,Sept.3-Oct.23, 1832.

Issued in 13 numbers in opposition to the re-election of General Jackson.

British telegraph monopoly.

Caption title.

American signal book, or, The United States telegraph vocabulary; being an appendix to Elford's marine telegraph signal book ... adapted to the use of the new semaphoric telegraph : to which is added the Boston Harbor signal book /

Mode of access: Internet.

The new semaphoric signal book in three parts: containing the marine telegraph system, with the appendix, the United States telegraph system, with the appendix, the United States telegraph vocabulary, embracing Marryatt's telegraph signal numbers, [as adopted by the British and French governments, at Lloyd's coffee house, London, and used at the Liverpool and Holyhead telegraph stations,] the whole adapted to the use of the semaphoric telegraph, and marine telegraph flags ...

Mode of access: Internet.

[Telegraph in Italy : pamphlet vol.]

Mode of access: Internet.

The American electro magnetic telegraph: with the reports of Congress, and a description of all telegraphs known, employing electricity or galvanism.

Mode of access: Internet.

The Telegraph and telephone journal.

Editor: W. H. Gunston.

Annual report of the President of the Western Union Telegraph Company to the stockholders.

Description based on: 1869.