I would like to thank everyone for thier input on my question about Ptolus. I went ahead and bought the book...
Yeah. I haven't opened it yet, but it's _huge_.
The thing is easily 1.9375 inches thick (1 and 15/16ths).
I have a vacation to begin day after tomorrow, followed by a 4200 mile journey... I'll post a review when I get to Texas, as I'll have probably had a couple chances by then to poke through it.
Incredible. By sheer size alone, I am impressed.