1. Introduction -- 2. Our History: How It All Began -- 3. Kinsey and Associates: Social Sources of Sexual Patterns -- 4. Gebhard and Associates: Continuities in the Typological Approach -- 5. The Transition Period: Think-Pieces and New Research -- 6. Bell: Sexual Development and Diversity -- 7. Weinberg and Williams: Social Reactions to Sexual Deviance -- 8. Our Monograph Series: The Spectrum of Human Sexuality