I have the same 4th edition, except reproduced by RCA in 1952.
That book, and the entire six volume RCA Tube Handbook, HB-3, is still useful. The tube handbook contains data sheets back to 1942, but I subscribed to up-dates.
It has the data sheets for the 913, the cathode-ray tube in the first oscilloscope I built in 1942. It had all of one inch screen on a tube that looked like a 6L6, but worked for things like frequency comparison.
It has data for the 954, 959 "acorn" tubes, which I used as rf pre-amps doing radio intelligence intercepts in North Africa while I was in the Army Signal Intelligence Service.
My first engineering job was at Bell Labs, where I "pumped" some of the vacuum tubes the went into TAT-1, the first transatlantic cable. Tubes are still very useful in things like microwave ovens and satellite transmitters. I worked with TWTAs for many years.
(I did teach transistor electronics for UCLA Extension in 1954-1955.)