All About My Penis 
The story of one man's penis and testicles, relating his experience of penis size and health, masturbation, sex, making love, with information on male sexual health, orgasm, and ejaculation.
http://www.my-penis.org/All About My Vagina
An extensive site covering all aspects of the female genitalia.
http://www.myvag.net/
Vagina Vérité
Articles and discussions exploring a variety of vagina and vulva topics.
http://www.vaginaverite.com/
History of Sexuality
A time line of sexuality information from pre-history to the recent sexual revolution. Includes a message board for topic discussions.
http://www.historyofsexuality.com
Sexology Professor
An open-content dictionary of sexually related terms.
http://www.sexologyprofessor.com
Sex Dictionary
A glossary of sex words and phrases listed in alphabetical order. Viewers can also submit definitions.
http://www.thesexdictionary.com/
