Here is a list of commonly recommended resources about natural birth.
The Birth Book - by Dr. William Sears and Martha Sears
Ina May's Guide to Childbirth - by Ina May Gaskin
HypnoBirthing: The Mongan Method - by Marie Mongan
Natural Childbirth the Bradley Way - by Susan McCutcheon-Rosegg
Birthing from Within - by Pam England
Mind Over Labor: A Breakthrough Guide to Giving Birth - by Carl Jones
BabyCatcher: Chronicles of a Modern Midwife - by Peggy Vincent
Creating Your Birth Plan - by Marsden Wagner
The Birth Partner - by Penny Simkin
Pushed: The Painful Truth About Childbirth and Modern Maternity Care - by Jennifer Block
Birth, The Surprising History of How We Are Born - by Tina Cassidy
Obstetric Myths Versus Research Realities - by Henci Goer
The Thinking Woman's Guide to a Better Birth - by Henci Goer
Bestfeeding, How to Breastfeed Your Baby - by Suzanne Arms, Chloe Fisher, and Mary Renfrew
Childbirth without Fear: The Principles and Practice of Natural Childbirth (Import) - by Grantly Dic_k-Read and Michel Odent (wouldn't let me write his last name! )
The Complete Book of Pregnancy and Childbirth (Revised) - by Sheila Kitzinger
Your Best Birth - by Ricki Lake and Abby Epstein
American College of Nurse-Midwives - info and "find a midwife" feature.
Midwives Alliance of North America - professional organization for midwives, includes resource links, midwife search, and homebirth info.
DONA International - an association of Doulas
American Association of Birth Centers - find out what they're about, and find a center near you
I-CAN, the International Cesarean Awareness Network - a good resource for information on VBACs including what to do if you are in an anti-VBAC area
Homebirth info (UK site)
Listing of articles supporting the safety of home births
Bradley Method home page - locate classes near you
Hypnobabies - information about classes and self-study
Spinning Babies - methods to turn babies while in labor
The Business of Being Born (website here)
Pregnant in America (website here)
Orgasmic Birth (website here)
www.briobirth.com Similar class style as Bradley, but a more modern feel and approach
Basically, these three documents are all related, one beget another beget another, and this is absolutely the literature you should print out and go armed with to an OB or hospital who insists on "once a c-section always a c-section". These were all published in 2010 so are relatively new.
Revised ACOG guidelines on VBAC's, as encouraged by the NIH consensus statement (Aug 2010 practice bulletin)
The NIH consensus statement. Also gives a comprehensive history on why it's difficult for many to obtain support for a VBAC.
Background evidence/technology assessment provided to NIH for the conference in 2010 which resulted in the consensus statement. Agency for Healthcare research and quality, for the US Dept of health and Human Services (has 291 medical literature references). Has some very interesting observations on inconsistencies in how the statistics are reported.
Websites with tools, summaries of what the literature says, and references to evidence:
http://vbacfacts.com - very resource heavy
Hope this helps for those looking for VBAC educational resources.