The rabbit hole goes deep indeed. In my personal archive I have only one of the S.S. Kresge Radio catalogs and this one is from 1931-1932. It runs 32 pages deep, chock full of resistors, batteries and tubes. You won't find the word capacitor in here. It's too early. They're still generally called condensers, mostly Mershon and Aerovox, a few from Potter and Muter. There are just two models made by Eureka I'm unfamiliar with. I do appreciate that there is no safety warning whatsoever. Anything over about 100v can do you harm and these go up to 2,000 v.
By 1931 we were growing out of the hobbyist era. Instead of lists and crude components there are now full branded kits for sale by Pilot and Philmore. Some of these kits have just 2 tubes which puts things in perspective. There is still some assembly required but the most expensive is $34.50. In 2026 dollars that's $738.24. But inflation in 2026 was so bad that numbers don't mean anything anymore.
You can download the whole catalog
HERE
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