Wireless Telephony in Theory and Practice

224pp VG/none First and only English edition, translated from the German by James Erskine-Murray, D.Sc. with an Appendix by the Translator and numerous illustrations. Editorial green cloth, black lettering on front board and gilt lettering on spine, minimal signs of wear mainly at head and tail, small stamp and owner signature (Henry Janne, Belgian physicist) on endpaper, very clean inside, printed on quality paper, overall in VG+ conditions, a nice copy of this scarce book. One of the earliest book on the subject, the first to give a connected and complete account, by a famous pioneer of light telephony and speech and sound reproduction, here expanded to cover electric wave telephony. With an Appendix, Errata and Bibliography at the end. The Appendix presenting the current advances in the technique was added by Erskine-Murray, well known electrical engineer and researcher in wireless communication, author of the famous Handbook of Wireless Telegraphy which went through several editions. In the Appendix is also notable the chapter Historical Notes by Prof. Fessenden. This is the original edition, not a modern reprint. An important and valuable book, rarely found in such nice conditions.