This is an undated "1970s" ad for a book on how and why to beat your wife that was available for cash or trade (the author accepted stamps), suggesting that this wasn't a mere money-making venture on the part of the author, but rather represented some kind of ideological quest. Perhaps it was an early incarnation of the bizarre movement that advocates beating babies with sticks in the name of Jesus.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.