Preparing for class discussions this week about sex education policy in the U.S. found me flipping through the Prelinger Archives, where I found this gem: Molly Grows Up. It’s a menstrual education film apparently intended for girls in about the sixth grade, made in 1953. Along with a basic explanation of the physiology of menstruation and puberty, the school nurse assures the girls that no one can tell when they are menstruating. But then she offers them this advice visible in this screen shot — and recommends the girls wear their best dresses and take extra care with “hygiene”.