Edition OAG Official Airline Guide North American timetable Issue 4/56 vol 12 num 7 Approximate Size 11" x 8.25" Pages 700 Notes Contains the US Air Routes map inside the back cover (these are frequently missing), and an insert for Eastern schedules effective on 4/29. Due to the complex nature of international postage rates, buyers from outside the US are encouraged to request a total for any multiple item purchases. Satisfaction is unconditionally guaranteed!