A couple of years ago we posted a series of weight gain ads from the 1940s, ’50s, and ’60s. Yes, weight gain ads. Say it a few times, see how it rolls unfamiliarly around your tongue. If you consume popular culture, it’s rare to come across anyone suggesting that there’s such a thing as women who are too skinny. Quite the opposite. Yet, during the middle decades of the 1900s, being too skinny was a problem that women worried about. And Wate-On was there to help them achieve the “glamorous curves” of “popular” girls.