Thanks for the positive comments; you're all quite welcome.
I just reread the book after many years - should've done that before posting, haha. Mainly wanted to say that if you're not inclined to read the whole thing, I suggest the "Third Interview" (page 54) as probably the most interesting. It deals with Segovia's first U.S. concerts, and how Papas and Segovia buddied up. The interviewer pumps Papas regarding other guitarists who performed in the U.S. in the first half of the 20th century. Papas also explains how Segovia's worry about his string supply during the war found its way to the Du Pont chemical company.
If you read the whole set of four interviews, be prepared for some repetition. Some points come up several times, and you might find this a little annoying -- or maybe a little amusing.
P.S. Cathy, you'll find the Clare Callahan connection on page 99.