Vintage RCA Receiving Tube Manual Technical Series RC-14 Softback book 1940

Book is in fair condition & readable. Not missing any pages. The front cover has separated from the book. This is a wealth of technical information concerning Vacuum Tubes, Tube Amplifiers, Schematics & more! 

Keywords: vintage audio tube shop manuals, historical RCA books, audio tube manual, vintage electronics manual, vacuum tube schematics