|Above, the cover of Classic Images magazine issue 477 (March 2015).|
Classic Images magazine has an article on the Superman Celebration of last August in their March 2015 issue (number 477).
If your local newsstand doesn't carry Classic Images, you can obtain a copy directly from them.
Here's the information from Bob King at Classic Images:
Just send $6 to Classic Images, 301 E Third, Muscatine, IA 52761 and ask for a copy of March 2015 CI #477