A couple of days ago, Pen and Ink left me a link to one of its posts How To Write For Boys And Girls. Blogger Lupe Fernandez had found what is supposed to be an article written in the 1950s on writing for children.
It's hard to pick a favorite line, but "Never have a girl romanced by a foreigner, especially greasers, scratch-backs, potatoes, pachucos, fruitpickers, or braceros" is a definite contender. I've never heard any of those expressions, except for greaser, of course, which I wasn't aware had any kind of ethnic connection. I thought it was sort of a style, like goth.