Many thanks to SWLing Post and SRAA contributor, Richard Langley, who writes:

“[C]oncerning the RCI anniversary, attached are scans of a QSL card from the CBC International Service for reception on 20 April 1964 when I was in high school. That was on the Knight-Kit Span Master regenerative receiver I had built the previous Christmas.”

“About 50 years later (in 2012, actually), I did an interview with RCI’s Victor Nerenberg on GPS and the ionosphere, which appeared on the RCI program “The Link.”

It’s still on their website:
http://www.rcinet.ca/english/archives/program/the-link/home/date/27-01-2012/
(about 15 minutes in)
and
http://www.rcinet.ca/english/archives/program/the-link/archives/episode/09-10_2012-01-30-the-link-friday-january-27-2012/

The RCI site also is featuring some information related to the 70th anniversary:
www.rcinet.ca/rci70-en/

And, lastly, there’s also some interesting stuff in the CBC’s Digital Archives under
http://www.cbc.ca/archives/categories/arts-entertainment/media/radio-canada-international-canadas-voice-to-the-world/broadcasting-to-the-world.html
There was also an episode of the CBC Rewind archives program on RCI:
http://www.cbc.ca/player/Radio/Rewind/2011/ID/2167995222/

Many thanks, Richard! I wish I understood the ionosphere as well as you do–that was a fascinating interview. Thanks for sharing your knowledge.

Gorgeous QSL card, by the way!