Many thanks to SWLing Post reader, Jarno, who shares a link to AmericanRadioHistory.com where you’ll find hundreds of issues of popular radio magazines from the 20th century. All of the issues are downloadable PDFs, thus can be viewed on any computer, smart phone, or tablet PC.
I find it amazing that many, if not all, of the magazines are even searchable. I could (and probably will) spend hours looking through and downloading these issues; I’ve been reading through the 1930s-era Short Wave Radio magazine this morning, and enjoying it thoroughly.
Many thanks for the tip, Jarno!