Millennium Week 2 tie-in
On-sale date from DC Releases #44, confirmed from copyright registration.
Story also ties in with Secret Origins (DC, 1986 series) #22, which tells the story of the beginnings of the Manhunters cult. Greg Weisman is given "special thanks" by the writers. On the title page, Iron Munro and Flying Fox are passing the World's Best Comics building, a reference to their replacing the Golden Age Superman and Batman in the post-Crisis universe.