THE TRACTOR BOOK

Margaret and Stuart Otto have done The Truck Book and The Boat and Ship Book, together, and they have kept their good standard here with an up-to-date information guide, illustrated with fine photographs, of a variety of tractors. A page or two to each of the forty-three different kinds, is divided between a picture of the machine at work and a few informally presented facts about it- and it may be anything from a bulldozer or a corn planter to a snow-plow or a logging winch. Rolls right along.