I was familiar with that Mark James book on Memphis.
It has received great reviews on Amazon and from fans of the Memphis territory that post on a couple of the boards I read. Even though I faithfully read the "Apter mags" as a kid, I never really knew much about Memphis (other than Jerry Lawler winning and losing the title a million times) until I got the Internet in the late 1990s.
I have about a dozen books sitting on my nightstand that I still have not gotten into yet. I have still not read Bob Backlund's book, which is supposed to be fabulous as well.
Unless opening this thread, I didn't even realize that there were obscure, hard to find 1970s sets like the Rax Roast Beef cards other than some of the stuff from Japan