I was a faithful subscriber to PopCom for many years. Not always the best journalism, but certainly (for me) the most interesting. I also read MT if there was something of interest. Like other oldsters here, I enjoyed monthly visits to the radio stores to browse the magazines and see what was new in electronics.
Police Call (mainly the SoCal detail edition) was invaluable to me as a news photographer, although Gene's "UXX" listings for FBI, USS (Secret Service) and other three letter government agencies got childishly tiresome after awhile.
Tom Kneitel's writings and publications filled in a lot of Gene's "UXX" gaps, especially the Top Secret Registry of US Government Frequencies. I still have a couple of copies that I use for reference occasionally.
There was another author/publisher, whose name escapes me at the moment, who published thick, computer printout books of California frequency guides in the 1980's or '90's. I think I still have a couple of them in the file cabinet.
The internet has removed a lot of the mystery and intrigue that was once a part of the scanner scene for better or worse. Conversely, agencies has adapted by going BIG E or adopting technologies like LTE.