I found Turner's book on ABE and ordered it yesterday, after choosing
among several other possible texts. Turner seems the best chance,
although I got a 1940 or 43 edition, I think I will still have plenty
of grist for the mill, as it were.

The GR 650A was the first GR product I saw on Ebay, and even though I
don't really know what it does, it lured me into this whole fascinating
area. I had to settle for a nice Heathkit '50s Impedance Bridge, and a
Superior Instruments Signal Tracer and CR Bridge, as my first
inexpensive tools, since the GR items were bidding up over $100 apiece,
which is too steep for a whim.

I will look for the vintage ARRL, also. That is also a great tip,
thanks.