JLA 18-19, DC Comics, 1998, 2 Part Story Arc
- JLA #18, Part 1 of 2 (May 1998): "Synchronicity" - The number 7 is unlucky for the JLA as 7 jumbo jets are on a collision course, 7 super-villains attack the White House and 7 skyscrapers burst into flames. Script by Mark Waid, pencils by Howard Porter, inks by John Dell. Porter/Dell cover.
- JLA #19, Part 2 of 2 (June 1998): "Seven Soldiers of Probability" - As the pandemonium unleashed by the Engine of Chance bends back through time, Leaguers start to disappear or find themselves changed. Script by Mark Waid, pencils by Howard Porter, inks by John Dell and Walden Wong. Porter/Dell cover
