Private Pilot Test Prep 2008: Study and Prepare for the Recreational and Private Airplane, Helicopter, Gyroplane, Glider, Balloon, Airship, Powered Parachute, ... FAA Knowledge Tests (Test Prep series)
Pilot's Encyclopedia of Aeronautical Knowledge: Federal Aviation Administration
Aircraft Weight and Balance Handbook: FAA-H-8083-1A (FAA Handbooks series)
