The Magic Loop 20 page how-to book written by Bev Galeskas and published by Fiber Trends in 2002.
This soft cover 5.5" x 8.5" book details Sarah Hauschka's "Magical Unvention" of knitting in the round using a long circular needle.
Great explanation of an extremely useful skill. Once you learn how to do this, there will be no stopping you. It's a great way to knit socks in public, the circular needle can't fall out like double pointed needles sometimes do.