The Little Red Book has fallen into disuse in recent decades, partly because it is considered 'outside literature.' But it actually merits close examination, being widely used in A.A.'s period of tremendous growth after the Big Book was published. LRB was praised by both Dr. Bob and Bill W, and Dr. Bob is believed to have helped edit the text. Check out these two informative links:

http://hindsfoot.org/redbk1.htmlhttp://www.aatheoriginalway.com/the-little-red-book