Sexuality Information and Education Council of the United States (SIECUS)
International Planned Parenthood Federation
Sexuality Education - Planned Parenthood
Program in Human Sexuality - University of Minnesota
The Kinsey Institute at Indiana University
World Professional Association for Transgender Health
World Association for Sexual Health
The Body: AIDS and HIV Information Service
Parents, Families, and Friends of Lesbians and Gays (PFLAG)
Religious Groups' Policies Toward Homosexuality and Homosexuals
JackinWorld - Information for kids and adults about masturbation
More links will be added. Send your suggestions to: gpence@post.harvard.edu