Letterer information 2005 by Steven Tice.
Based on part of the novel A Princess of Mars.
Loosely based on Edgar Rice Burroughs' The Ancient Dead.
In essence a mix of Edgar Rice Burroughs' novels The Chessmen of Mars and The Mastermind of Mars.
Cover credits provided 2006 by Nick Caputo.
Cover penciling credit confirmed by John Byrne November 2004.
A 5 page interview of Marv Wolfman from Foom #20 which contains various illustrations.