I did not start the message board thread that gives this entry its title, but I contributed to it and think it contains some interesting comics knowledge that is in danger of being ignored. So with thanks to the poster going by the handle "bettybrant" (I think this is actually a fella, by the way) for getting the ball rolling, we'll outline some revelations here.
It began with the revelation that Marvel Triple Action #45 does NOT contain excerpted panels from Avengers #52 as noted in the GCD index, but rather three completely new pages. This led to some discussion as to the reasons why this was done and who might be responsible for these new pages. At this point, I'd say MTA editor Jim Salicrup is the best candidate for scripter, and Sal Buscema seems the popular choice as penciller.
It could have ended there, but happily, it didn't. The discussion turned to other 1970s/early 1980s Marvel reprints, and more specifically, to new material prepared for them. Among the goodies that were posted were a number of new covers, some retooled covers, and a brand-new splash page used in Marvel Super Action #17.
By this time, the link to one of the best resources for these books on the net, Arthur's Marvel Comics Reprints Website, was posted (though sadly, it has not been updated in several years), and I figured the revelations were drawing to a close. Then "Urban" posted the "Avengers Hall of Fame" features that ran in the final three issues of Marvel Super Action, and in the middle of people trying to guess who DREW them, Roger Stern himself popped up and told us that he WROTE them. Wow! He also said that he believed they were pencilled by Bob Budiansky (a name that is not usually mentioned in these situations) and possibly inked by Josef Rubinstein.
(Uncle Roger also confirmed my long-held theory that Marvel Super Action #4, the "Marvel Boy" issue, was a tactic to maintain a trademark on that name. It was simply easier to slot reprints into MSA than it was to prepare a new story for a character with that name.)
There were a couple more cool things that subsequently turned up : proof that the cover to Marvel Super Action #32 was actually by Marie Severin, and a side-by-side comparison of the Hulk back-up that ran in Marvel Super Action #34 and the pages from the U.K. strip that served as its basis. Crazy, wild stuff that I never would have dreamed of learning when I was buying these books new off the newsstands!
The thread has quieted down now, and is probably done. But I don't want to lose the knowledge that I gained from it, so I wrote this entry to both link to the thread and summarize what I consider its most important points.