The Aeroplane, The Locomotive, The Motor Car, Television, Telephone and The Camera and from the How it Works series in good condition. They were published in the 1970s by Wills & Hepworth (later on Ladybird). They are hardback. The spines are intact and there are no loose or torn pages. There are no pen marks or scribbles. Please hover over the pictures for more detail and message me with any questions.