Try seaching amazon.com for books about Porsche.
I found the "Porsche 917" and the "Porsche - Racing Cars" books but can't remember the prizes - guess they were a little too expensive then!
On eBay you can also find good books about Porsche!
Or better - DVDs!!!
A forum community dedicated to slot car owners and enthusiasts. Come join the discussion about collections, racing, displays, models, track layouts, styles, reviews, accessories, classifieds, and more!