Avengers of Justice was published as a bundle of three booklets with an outer wrap (the outer sleeve was intended to "double" as a referee screen).
The three booklets presented two complete games and one sourcebook - all subsequently have been individually published in PDF format. The bundled items include:
Note the outer wrap's image later was used as the cover of Space Gamer/Fantasy Gamer (Vol 2, Issue 7) - which also reprinted Villains Finish First. Good Guys Finish Last likewise was reprinted in Space Gamer/Fantasy Gamer (Vol 2, Issue 3).
Natter, reviews (Good Guys Finish Last, Villains Finish First, Designing Comic Book Scenarios), comments