Marvel Super Action was a comic book printed by Marvel from May 1977 to November 1981 for a total of 37 issues.
Marvel Super Action reprinted Captain America stories in the first 13 issues, then Avengers stories for the rest. The Captain America reprints followed Marvel Double Feature #21 while the Avengers reprints picked up from Marvel Triple Action #47.
Issues 1-13 reprinted Captain America #100-111 and 2 Marvel Boy stories from the Golden Age: Marvel Boy #1 and Astonishing #5. The Captain America stories each have 2 pages cut. These are classic Stan Lee/Jack Kirby productions, with the last 2 issues by Jim Steranko. The Captain America stories have been reprinted in the Masterworks, Omnibus, and Essentials books.
Issues 14-15 reprinted Avengers #55-56, followed by the Avengers Annual #2 reprint in issues 16-17. Issues 18-37 reprinted Avengers #57-76.
Issues 14-15 and 18-24 all have 2 pages cut. Issues 25-37 are complete while Issues 16-17 have 8 pages cut in total. Complete reprints can be found in the Marvel Treasury Editions and Greatest Battles of the Avengers TPB, as well as the Masterworks and Essentials books.
Avengers Annual #2 contained a two part story. The first part was called "... And Time, the Rushing River..." and was 24 pages long. This was reprinted in Marvel Super Action #14 with 6 pages cut. The second part was called "The Avengers Must Die!" and was 20 pages long. This was reprinted in Marvel Super Action #15 with 2 pages cut. Overall, there were 8 pages cut from the original 44 pages.
The early Avengers reprints contain classic John Buscema artwork. These are seminal issues: Vision intro and origin, Ultron origin, Yellowjacket intro and origin, Yellowjacket and Wasp Wedding. After John Buscema comes Gene Colan, Barry Smith, (pre-Windsor) Sal Buscema, and then back to Big John. This is a great run of Avengers and not to be missed by true Avengers fans.