Ok, how about this for an idea. We take it in turns to post a favourite (British spelling) comic cover every day. This went really well on the comic fan website that I used to frequent. What we tried to do was find a theme or subject and follow that, until we all got bored with that theme. I'd like to propose a theme of letters of the alphabet. So, for the remainder of October (only 5 days) and all of November, we post comic cover pictures associated with the letter "A". Then in December, we post covers pertaining to the letter "B". The association to the letter can be as tenuous as you want it to be. For example I could post a cover from "Adventure Comics" or "Amazing Spider Man". However Spider Man covers can also be posted when we're on the letter "S". Adventure Comic covers could also be posted when we're on the letter "L" if they depict the Legion of Super Heroes. So, no real hard, fast rules - in fact the cleverer the interpretation of the letter, the better, as far as I'm concerned.
And it's not written in stone that we have to post a cover every day. There may be some days when no cover gets posted. There's nothing wrong with this, it just demonstrates that we all have lives to lead.
If everyone's in agreement I'd like to kick this off with one of my favourite Action Comic covers, from January 1967. Curt Swan really excelled himself here.
Action Comics #314 (Jl'64) was the first mention of the Flash in a Super-title yet their first race wasn't until Superman #199 (Au'67) over three years later! Why did it take so long? Was Mort Weisinger that reluctant to have a Julius Schwartz hero co-star with his Man of Steel?
Yet the sequel in The Flash #175 (D'67) came a mere four months later!
btw, the GCD says that the cover of Flash was by Carmine Infantino with Al Plastino drawing Superman's face which was SOP for DC for decades. It's definitely an Infantino layout but Superman looks like Ross Andru's (the interior artist) work to me.
Superboy #96 featuring Pete Ross. Pete was the childhood best friend of Clark Kent in Smallville. One night when they were camping together, Pete secretly saw Clark changing into Superboy to attend an emergency. Pete kept his knowledge of the superhero's secret identity to himself, even avoiding revealing his discovery to Clark. The Legion of Super-Heroes was aware of Pete's assistance to Clark and made him an honorary member during his teenage years (as shown in Superboy #98). During the Legion's battle with Mordru in Adventure Comics #370 ("The Devil's Jury"), it was stated that Pete Ross's knowledge of Superboy's secret identity would one day end up saving Superman's life (explaining why the Legion allowed Pete to retain that knowledge); however, no Superman story ever followed up on this detail until the very end of this continuity.