Berlin: telefunken gesellschaft für drahtlose Telegraphie 1928. 328,  pages. 4to. Rebound in blue buckram (original was in gold printed boards). Laid in is a letter from Heino L. von Goehde noting that this is one of 2 copies given by Dr. Otto von Bronk of Telefunken Company to him in 1929, one to be given to then President Herbert Hoover, the other for himself. It further notes his gifting this copy to a good friend and associate Mr. Charles J. Prescott, Jr in 1951 (and noting that as of that time these were the only 2 copies that had reached the American continent). Also INSCRIBED by Dr von Bronk on the half title page. Foxing throughout, very occasional pencilled notation or marking. Includes a series of photo-gravures of various important people in the industry. Text in German. Good. Boards.