This is an older topic, but it just came up again for me as I yesterday bought, for $5, a copy of the book that first kindled my interest as a child, "Flying Aces of World War I" by Gene Gurney, 1963. A hardbound copy like the one I had came up on ebay for $5, and I couldn't resist. The lure was mostly nostalgia I suspect, since we have such great reference materials all these years later, but it's fun to go back and re-read some of the old stuff that inspired us, from time to time.
Regards,
Bob