The P-51 Mustang by Len Morgan, Famous Aircraft Series F-82 known in the US Air

known in the US Air Force as the Type E-4 autopilot system during the late 1940's and 1950's

Ground Handling and Lubrication

At both top and bottom of the compass housing are compartments for compass correction rods

Here is a WWII-era Aircraft Spotters Handbook published in 1943 by the National Aeronautics Council for use by civilian air observers

Here is a Fuel Pressure Indicator for a dual engine aircraft (or two used for a 4 engine aircraft)

The P-51 Mustang by Len Morgan, Famous Aircraft Series F-82 known in the US AirThis 92 page book was published in 1979 as an overview of the P 51 Mustang Fighter. It contains both descriptive text of operating the aircraft as well as background on its development and deployment. It also contains a condensed version of the 1945 Pilot Training Manual.