The P-51 Mustang by Len Morgan, Famous Aircraft Series F-82 Here is a Fuel Pressure

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

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

See images of the scope on the F-94 and the F-89 (instrument panel from the F-89 flight manual)

Ground Handling and Lubrication

and Auxiliary Wing Tanks

The P-51 Mustang by Len Morgan, Famous Aircraft Series F-82 Here is a Fuel PressureThis 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.