Tad Williams 's Memory, Sorrow, and Thorn , Otherland , and Shadowmarch series. Whelan provided covers and interior illustrations for Stephen King's The Gunslinger and The Dark Tower , the first and last of his Dark Tower books. [1] MORE: http://en.wikipedia.org/wiki/Michael_Whelan ART BY FRANK FRAZETTA: MORE: http://castrapraetoria1.blogspot.com/2012/01/john-carter-of-mars-workout-nco-pt.html MORE: http://www.tumblr.com/tagged/a-princess-of-mars MORE: http://forums.3dtotal.com/showthread.php?t=71182 MORE: http://geekynerfherder.blogspot.com/2012/02/art-of-barsoom-frank-frazetta.html