A month or so ago I found a copy of Gygax's Sea of Death in a used bookstore. This is one of many Greyhawk related novels he put out after leaving TSR and taking the character of "Gord" with him. Many of these books I still have never found, and I've purposefully neglected to hunt them down online, instead making it a life-quest to find them the hard way. I haven't read Sea of Death as of yet, but I know from a bit of google research that it is about the ongoing quest for the Theopart artifacts of Tharizdun, and features such familiar places as the "Ashen Desert". It also includes notable Greyhawk NPCs like the drow priestess Eclavdra and Graz'zt, prince of demons.
If anyone has read this book, give me a review here (good, bad or indifferent) and I'll be happy to read it.