Give us 375 bucks, we'll give you the world....or at least part of it

In the US, a new 3-volume Encyclopedia of Radio has just been published. It contains a number of ground-breaking essays and research never seen before, trying to provide a reliable reference work on the history of radio from day one to now. It took the authors 5 years. Bit expensive for the individual, but something to ask for at the local library.....