I think you can buy the Barr and Wells book via the web page I gave. In fact I think that's how I got my copy, which must have been around the same time you wer

I think you can buy the Barr and Wells book via the web page I gave. In fact I think that's how I got my copy, which must have been around the same time you were looking for it. I haven't read Walters book, & would also be interested to hear reactions from anyone here who has.