A few articles talking about him (and showcasing his work — which was, for me, the definitive appearance of so many critters and worlds):
– http://en.wikipedia.org/wiki/David_A._Trampier
– http://skylandgames.wordpress.com/2013/02/18/the-strange-case-of-dave-a-trampier/
– http://www.escapistmagazine.com/news/view/133338-Old-School-AD-D-Artist-David-Trampier-aka-D-A-T-Is-Gone
– http://www.dorktower.com/2014/03/27/9489/
– http://terribleminds.tumblr.com/post/80974485435/atomicovermind-word-is-that-dave-trampier-has
– http://towerofzenopus.blogspot.com/2014/03/if-one-visual-was-ever-face-of-d.html
David A. Trampier, the Illustrator Who Defined the Look of Advanced Dungeons & Dragons, Has Passed Away, 1954-2014 | Tor.com
David A. Trampier, the artist responsible for defining the look of Advanced Dungeons & Dragons, has passed away.