What Was the First Book About Sex You Read?

When I started asking questions about sex as a kid, my mother handed me her own well-worn copy of From Little Acorns: The Story of Your Body. A pretty staid choice compared to the more explicit sex-ed books for kids from the 1970s, but it was considered quite progressive when Mom first read it in 1951. » 4/30/15 8:20pm Thursday 8:20pm