Instrument Flying Manuals, Set of 2, Beam and Instrument Approach System 1943

This is an original set of 2 training manuals for pilots of the US Army Air Force during WWII:  Standard Beam Approach (TO 30-100E-1, March 1943, 28 pages) and Instrument Approach System (TO 30-100F-1, November 1943, 12 pages).  

These manuals are in good condition given their age. They came to us from the estate of a B-17 flight instructor.