Sad, sad news, though I choose to believe that a few lucky souls in the afterlife are even now enjoying a romp through the D-series DMed by the father of the game.
It is a little late but thanks for helping me through those teenage years. It would have been much harder if you hadn't shown me how to fight monsters.
I'm really sorry to hear this news. I appreciate the impact Gary had on the genesis of RPG gaming; effectively giving birth to a hobby I've had for most of my life.