This is the official PDF from shop.nin.com, intended to be printed and included along with the release of the Quake soundtrack LP. Zenimax objected to the release of this booklet with the record, so it was released online "unofficially" via links in the product's store page description. However, those links disappeared. This is the original, unaltered file, fit for printing. Includes essays by John Carmack and American McGee.