I've looked several times, and I can't really find much for just Betamax. Usually it's part of a general VCR book, like the one from Capelo. Betamax and VHS were so alike, that it's probably silly to split it into a VHS and Betamax book. Instead, they all do one, and talk about both formats where needed.
Link:
http://www.amazon.com/gp/product/075...&tag=thdifa-20
Most of what you see is "historical". I use quotes because a great many of them are revisionist regarding the facts. Many have an underdog worship for the format, but either gloss over or ignore the long list of grievances people had with it. I was old enough in the 80s to know it wasn't any better than VHS -- not really. It's not like Hi8 was -- now that was a good format (no chroma errors!)
