Boing Boing points us to a hilarious book: From Ball-Room to Hell. It was written in 1892 by a former dance-master who had become "saved" and forsaken his former waltzing ways. Yes, waltzing is of Satan. And will lead to loss of virginity and higher insurance premiums and cavities and who knows what else.
Of course, the way the author writes about the girl being seduced by the dance, you'd think he was protesting a bit too much. Anyway, hilarity. Enjoy.