The low sales of the various Justice League spinoff books by the mid-1990s prompted DC to revamp the League as a single team (all the various branch teams were disbanded) on a single title. A Justice League of America formed in the September 1996 limited series Justice League: A Midsummer’s Nightmare by Mark Waid and Fabian Nicieza. In 1997, DC Comics launched a new Justice League series titled JLA, written by Grant Morrison with art by Howard Porter and inker John Dell. Morrison stayed as writer for the series through issue #41, though several issues had fill-in writers. JLA #18-#21 and #33 were written by Mark Waid. Mark Millar, Devin Grayson and Mark Waid, and J.M. DeMatteis wrote issues #27, #32 and #35 respectively.
This series, in an attempt at a “back-to-basics” approach, used as its core the team’s original and most famous seven members (or their successors): Superman, Batman, Wonder Woman, Aquaman, Flash (Wally West), Green Lantern (Kyle Rayner), and the Martian Manhunter. Additionally, the team received a new headquarters, the “Watchtower“, based on the Moon. JLA quickly became DC’s best-selling title, a position it enjoyed off and on for several years.