Charles Scribner’s Sons, New York, 1969.  Former school library book with associated treatments.  Hard cover, 227 pages including Glossaries and Index.  Brown boards with light edge and spine end wear; faded school stamps on top and bottom page blocks; some foxing on outer page block; binding sound.  Clipped dust jacket with faded tape mark near spine edge (but no tears), in clear cover protector.  Interior clean and unmarked; borrowing slip and pocket on rear end paper; black & white illustrations.  ‘… introduces radio and electronics enthusiasts to the technological miracles of solid state physics, semiconductors, and transistors.  In addition to explaining the background and practical applications of these relatively new discoveries, Mr. Morgan presents detailed instructions for constructing solar-powered radio receivers, a galvanometer, a solar powerhouse, a transistor motor, a photoelectric burglar alarm, an automatic light switch, and electronic slavery, a rectifier for recharging storage batteries, and code-practice oscillators.’ (from front flap)