Roy Harrington. How? What? Why? Kids are always asking questions - especially about big machines. Covers John Deere tractors and implements. Beautiful color photos illustrate the text. Detail and cut-away shots show the inner working of these farm machines. Interesting trivia facts are included with each topic. This book truly gives children the inside story about John Deere tractors and implements, from behind the metal to the inner working of the gear and motors. Ages 10 and up. 48 pgs, Hardcover