Weirdly, I have that book. It's how I know about masks. I have a horrible feeling that I stole it from someone instead of buying it, although I have no idea whose it was so I can't make amends, and I may be wrong.

When I was sorting books recently, it was a prime candidate for box-in-the-attic status, as were my other two theatre books (Grotowski and Peter Brook). They just made the cut, largely because you and I have been talking about this.

Time for a reread methinks.