I recently got a copy of Phil and Denise Sheard's "Film Collector" magazine via Steve Osborne at The Reel Image...

Really professionally done with 30 pages and interesting articles including one on Columbia Super 8 releases, Keith Wilton reviews, tales from Ged Jones, and more.
Definitely worth a look....here is the cover image..

I like reading up on these sort of articles.
Columbia released so many titles on 400s you do forget so many.