This is an expert's succinct description of electricity and electronic theory as it concerns the devices named above. It is also a running history of the field. It touches all the high spots -- wireless, audion and pentude tubes, superhetrodyne, etc., and the men who made them possible. For the serious student who wants to know the whys and wherefores of basic circuits as well as the enterprising tinkerer, the book is lucidly written and offers many clear diagrams.