Offering this book titled The A B C of Wireless Telegraphy, new 3rd enlarged edition; a plain treatise on Hertzian Wave Signaling; embracing theory, methods of operations, and how to build various pieces of the apparatus employed, a chapter on the Marconi System; by Edward Trevert; illustrated; published by Bubier Publishing, Massachusetts, 1906. Black cloth hardboards with gold gilt lettering on front and spine. Good+++ condition, no spine cracks or fraying, clean. End papers and hinges are secure (one small smudge on back end paper). Pages are clean, no tears, scribbling, or stains; light toning. A nice, hard to find book!