Honestly, it's been my experience that nothing in those books can't be found online for free if you do a search. I've bought a few books on Windors but they serve as more of a reference when i'm outside away from the computer...if they serve me at all.
I guess that doesn't me NO to your question, i just haven't seen any real worth while books. That is, aside from a couple Holley books i have which are always good for working on carbs.