chapters on the Wheatstone A.B.C., Hughes, Baudot and Murray (automatic and multiplex) systems pp 398-519

article by Maximilian Foster in World’s Work (August 1901) : 1195-1199
perforated tape driven, not yet multiplex, other than if using “Morse quadruplex system”. four photographs, including two of (presumably) Donald Murray.

The Journal of the Institution of Electrical Engineers 47 (1911) : 450-529
Builds on his “Setting Type by Telegraph” (1905); analytical and practical. good account of press messages (463-466), newspaper private wires (466-467), even “counting words in telegrams (473-477)

The Journal of the Institution of Electrical Engineers 34 (1905): 555-608 ¶ beautiful presentation.
“The simplicity of these machines and the saving of wire cost depend on the fewness and simplicity of these signals. It is in this reduction in the number and the simplification of signals that there will be found to lie not only the fundamental distinction between the telegraph and the telephone, but also the fundamental criterion of all telegraph systems...” (557); Mr Judd in discussion, “but when the hideous code words...”; automatic typesetting by telegraph is discussed at 593, including obstacles; the President (at 607-08) remarks, “I have never seen before that the demonstrator absolutely took the instrument to pieces before the audience and put it together again — and then worked...” ¶ numerous images of "code"

FINALLY digitized. Lucien Alphonse Legros and John Cameron Grant their broad, deep and intelligent compendium (1916) ¶ link opens directly to appendix in which are listed British and U.S. patents, covering some non-obvious ideas (printing telegraphy, conductor's ticket stampers, &c) ¶ though light on Grant, see L. W. Wallis, “Legros and Grant: The Typographical Connection.” Journal of the Printing Historical Society 28 (1999): 5-39 —— I love this book and am fascinated by its two very different authors.