The Wichita Divide: The Murder of Dr. George Tiller and the Battle over Abortion, Stephen Singular. This is a REALLY great book that was released last year. And I have to say, I've had a little contact with Mr. Singular and he is very gracious.
This Common Secret: My Journey as an Abortion Doctor. Susan Wicklund. You will not find another book on the topic as moving as this one. Susan Wicklund is a provider that is not comfortable providing abortions past the 14th week, and in this book, she's written about her journey from single motherhood to an abortion provider.
Abortion and Life. Jennifer Baumgardner. This one is interesting because it is a collection of several women's stories of abortion. Some are not for the light of heart, but it's definitely a must-have if you're interested in the cause.
Our Heartbreaking Choices: Forty-six Women Share Their Stories of Interrupting a Much-Wanted Pregnancy. Christie Brooks. This book WILL make you cry, especially if you are a mother. This is where you will start to wrap your mind around the concept of late term abortions. Christie Brooks is also an author that I've had contact with, and she is VERY passionate about the cause. She also runs a website related to this book, and I'll post it as well.
http://www.ourheartbreakingchoices.com/ , The website that goes along with the book.
http://www.texasobserver.org/cover-story/the-right-not-to-know , A recent news article about the recently adopted Texas Law.
And finally, a little bit from the other side. You can type George Tiller into the search bar on Operation Rescue's website and find all of their demeaning stories on him (which will probably push you to do a little "googling" of you own....well, at least I hope...)...