PBS
Wnet: Thirteen: Supreme Court History: Expanding Civil Rights: Roe v. Wade (1973)
PBS' series on the Supreme Court covers several landmark cases, perhaps the most controversial of which is Roe v. Wade. Read about the case here, the reasons for the ruling that was made, and the exceptions to the ruling.
WebMD
Web Md: Your Third Trimester
This article from WebMD provides great information on the third trimester of pregnancy. Denise Chism is the author of this somewhat in-depth article that tells of weeks Thirty-Three to Thirty-Eight, and the finishing touches on the baby.
Other
Women's Health: Stages of Pregnancy: The Third Trimester
Provides a description of what the expecting mother can expect to go through during the third, and last, trimester of pregnancy.