I'd highly recommend Kingsley Abbott's '500 Lost Gems of the Sixties'...
Man, I have that book! Don't know why I didn't think about mentioning that one in my posts. You're right. It's great and there are a lot of good references to sunshine pop & soft pop. Will have to flip through it again.
John, thank you for the heads-up on the French book. I had never heard about that one before and it certainly looks very interesting. Sadly, I don't understand French so it's no good for me. What a shame that it's not available in English. The author sure seems to have done a lot of interesting interviews with key players...