I would highly recommend the book Protective Relaying for Power Generation Systems by Donald Reimert. This book goes into great detail on protection for generators more than some of the other protective relaying texts like Blackburn (even though that is still a classic). Below is a link
Thanks for the link - hadn't seen that one before but will definitely keep an eye open for it. Maybe David will add it to the FAQ when he does the next update.
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If we learn from our mistakes I'm getting a great education!
Schneider's Cahier Techniques series is very good. Main link Index
Their electrical installation guide is useful for those of us in Europe (Did I really say that? I meant "Those of us located offshore near Europe" ) It's also become a Wiki page rather than an in-house resource.
If we are including web references - which may be a good or bad thing! - then this site is a goldmine of the obscure, obsolete and the hard-to-find: