Doug Thompson just acquired a large number of RPM magazines. And he stumbled across a couple of very interesting articles on a time I'd pretty much forgotten about: All Request Radio.
I now have the two articles about CHED and CJCA going All Request on the Edmonton Broadcasters Club web site. You can see them here:Note in the article that CHED even stop publishing their chart! And the use of the term "hippys" in the CJCA article.