 The Clangers originated in a series of children's books developed from another "Smallfilms" production, "Noggin the Nog".Publishers Kay and Ward created a series of books based on the "Noggin the Nog" television episodes, which was subsequently expanded into a series called "Noggin First Reader", aimed at teaching children to read.In one of these, called "Noggin and the Moonmouse", published in 1967, a new horse-trough was put up in the middle of the town in the North-Lands.