(1919) London, Pitman 59pp
First (only?) edition, not dated, presumably 1919 (from the Preface). Full title Guide to the Study of the Ionic Valve Showing Its Development and Application to Wireless Telegraphy and Telephony.
Original editorial grey cloth, traces of dust on the cover, presentation label and stamp (G.P.O.) on the pastedown, paper lightly age-yellowed, internally VG, few tiny negligible pencil marks, overall a G-to-VG copy.
Very scarce early book on electronic valves and their development, the author was Head of the Department of Wireless Telegraphy at Rutherford College, Newcastle.
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technology, electronics, wireless, radio valves, vacuum tubes, radio circuits, wireless telegraphy, telephony, radiotelegraphy, Fleming valve, Audion, De Forest, Lieben-Reisz, Armstrong, Morecroft, Eccles, Hull, Langmuir
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