KB 279 TRF radio from 1931

[Nowhere-Man]

He was known as the ultimate practical man. Even did books on pushbikes.
I am after his book on the superheterodyne.
I think maybe mid Thirties the new thing was transformer coupling as opposed to resistance capacity coupling.
Is Mike going to name the valves for us? Persumably one AF amplifier, pentode detector, triode and output valve. Will they still work in fact?