The ABC of Wireless Telegraphy A Plain Treatise on Hertzian Wave Signaling Embracing Theory, Methods of Operation, and How to Build Various Pieces of the Apparatus Employed by Edward Trevert New 3rd Enlarged Edition 1911 H/B 120 pages plus 23 page supplement Has marks, bumps, foxing, etc., but otherwise good condition. Contents: Electricity and Magnetism Historical Notes Experiments with Hertzian Waves Electric Batteries for Wireless Telegraphy The Marconi System of Wireless Telegraphy General Information about Wireless Telegraphy Conclusion Appendix: A- The Marconi Wireless Station at Cape Cod B- The Stone Selective System C- Space Telephony for Long Distances D- Guarini's Wireless Fire-Alarm System E- Additional Information Supplement to the Wireless Operators' Pocket-book Latest Call Lis of Wireless Stations Alphabetically Arranged 1911