I just mentioned a couple of books in the Shamanism group during a discussion on  the history and culture of women shamans and thought I would post them here as well. They are both excellent:

"The Woman in the Shaman's Body: Reclaiming the Feminine in Relgion and Medicine by Barbara Tedlock

"Shakti Woman: Feeling our Fire, Healing our World-The New Female Shamanism" by Vicki Noble