All artists and authors did many things, but for Star Wars purposes, Timothy Zahn worked on The Thrawn Trilogy: Heir to the Empire, Dark Force Rising  and The Last Command ; also The Hand of Thrawn Duology: Specter of the Past and Vision of the Future .  Also: Mara Jade: By the Emperor's Hand and the short story Sleight of Hand: The Tale of Mara Jade and Tales from Jabba's Palace. If you know of any other Star Wars projects, let me know. Obtained through the mail.