DC · December, 1989
1st appearance of Arm Fall Off Boy; Origin of Justice League of America Headquarters; Origin of Legion of Super-Heroes Clubhouse; Origin of Teen Titans Headquarters; Blueprints of Teen Titans Headquarters; Legion of Super-Heroes Headquarters
Ghosts of Stone; Tower in the Sky!; The Little Cluhouse That Could
Writers: Grant Morrison, Marv Wolfman, Gerard Jones
Artists: Curt Swan, Vince Giarrano