I think the book you are talking about is "The Search For ZERO Point".
It's all about the hunt for anti-gravity, it seems the German were pretty close to using spinning saucers etc.. and the Americans who took the research were predicting break-throughs in the early '50s.
It's well written book, still in print and available via most web sites. Course it may all be rubbish, but as they say 'no smoke without fire' unless you're a firefighter in the UK.