Anne Hooper's Sexology 101 : From Victorian Transvestites to '70s Swingers and Internet Viagra

Page after page of fascinating facts with fun illustrations:

The ancient Greeks wrote manuals of sexual positions including one position called 'Lion on a Cheese Grater'

A Victorian cross-dresser named Magnus Hirschfeld established the first sex institute with a library estimated at 20,000 books and papers on sexuality; until 1933 when the Nazis burned it to the ground.

Early sexologist could not find women to study so they tried using prostitutes, but gave up on the practice when it was clear that the women's profession clouded the test results in a number of ways

Alfred Charles Kinsey published the first extensive statical survey of sexual habits and it shocked 1950s American by showing that masturbation was pervasive (96% for Men, 85% for women), premarital sex was common (60% for men, 50% for women) and even Ozzie and Harriet may have been doing a little more then reported with 50% of men having had extramarital sex as had 26% of women

Masters and Johnson used a glass dildo with a camara inside it to film the inner workings of the vagina

In 1998 a man was arrested in Illinois for having sex with a pumpkin...
etc, etc