Practical Engineering (Aircraft Engine Systems), US Navy WWII Training Booklet
This original 35-page typewritten booklet was published by the US Naval Air Station Miami Florida Ground School as a training aide for student pilots. The booklet covers the 5 major systems of an aircraft engine: Induction, Electrical, Mechanical, Lubrication, and Cooling. Also included are separate pages covering Hydraulics and Propeller.
It is in reasonable condition given its age.