R.G. Wade on the 1960-63 Cycle

I discovered that 'The World Chess Championship 1963, Botvinnik v. Petrosian', a book by R.G. Wade, included a summary of all zonals (p.54-57) played during the 1960-63 cycle. I added the corresponding clippings to my page on that cycle: The World Chess Championship : Zonals 1960-63. Curiously, the clipping for each event had some information of which I was previously unaware.