I recommend Ernest Kurtz and Katherine Ketchum, The Spirituality of Imperfection. and another, Spirituality Through Storytelling, both available on Amazon. Although they liked AA they were apparently agnostics, if not atheists. Kurtz also wrote a fine history of AA which indicated that there is hard evidence that Bill W distrusted organized religion and was concerned that AA groups might become too dogmatic. He believed that everything in AA should be viewed as up to the individual to accept or put aside as that person chose. i think i followed Bill W.'s path and I have been sober for nearly 27 years now.
W.