Thanks! Your copyedits are much appreciated, as is the advice. To reply to your points:
I was afraid that the section about his books rambled a bit, although I want to make sure to keep enough of it in. Especially in Szigeti on the Violin, he reveals a lot about his personal philosophy of music and violin playing, which (in my opinion)is very important for his biography. That said, I will try trimming it down.
Yes, he was indeed married to the same woman for all those years, and as far as I can tell their marriage was a very happy and harmonious one. There are some nice vignettes of their life together in his autobiography, maybe I'll try to work in a few mentions of domestic life somewhere. 
I had a good laugh at your remark about how I should get academic credit for this, especially because just a few days ago, my obnoxious Music History professor bellowed "Don't ever look up anything on Wikipedia if you expect to stay in this class! WIKIPEDIA SUCKS ROCKS!!" after which everyone burst out laughing and I sat fuming. ) 
Anyway, thanks again, you are very helpful and much appreciated as usual! -)