All artists and authors did many things, but for Star Wars purposes, R K Post worked on: Ultimate Adversaries (Star Wars), Coruscant and the Core Worlds (Star Wars), Ultimate Alien Anthology (Star Wars), New Jedi Order Sourcebook (Star Wars), Power of the Jedi Sourcebook (Star Wars), Rebellion Era Sourcebook (Star Wars), "Star Wars-Silent Death: The New Jedi Order" in Star Wars Gamer #7 and Star Wars Roleplaying Game  If you know of any other Star Wars projects, let me know. Obtained through the mail.