Many thanks to SWLing Post contributor, Jarno (PA3DMI), who reminds us that the American Radio History site is chock-full of radio nostalgia:
To keep you and your readers busy 🙂
http://www.americanradiohistory.com/Radio_News_Master_Page_Guide.htm
Many thanks, Jarno!
Check out the main index for even more radio periodicals.
I remember the metal 6L6 tubes. Had a friend that built an inverted linear amp with 4 of them … upside down…. in a coffee can of water to cool them. It worked. Had boiling water as a byproduct.