Big Yellow Trucks and Diggers By (author): "Catepillar, Caterpillar"Genres:Childrens books Trucks books ISBN0811840301ISBN139780811840309AsinBig Yellow Trucks and DiggersOriginal titleBig Yellow Trucks and Diggers (Caterpillar)Kids love trucks and diggers, and with the help of full color photographs featuring rugged Caterpillar machines, these budding little contractors will love learning colors, too!