Mxsmanic wrote:

Among other things, he advocates a "stall-proof" airplane,
which may not be possible and which certainly is not desirable.

Years ago I read of NASA having developed a stall-proof wing, but I
don't know what became of that, or if it ever was incorporated into an
aircraft.

There is a light aircraft called the Ercoupe. It's pretty much
unstallable. As a matter of fact, it's design fits Langewiesche's
musings on the "ideal" airplane.

You should be able to order the book from Amazon's european outlets.
I again would recommend Kerschner's book as also pratical. He goes
through a lot of flight trainning concepts with enough aerodynamics
to satisfy the how and why questions.