[This section is pared from Erik Mona's Greyhawk Bibliograpy section in the Greytalk FAQ - many thanks to Erik.  The Starship section is from my "Thus Spake Gary Gygax" article.]

****************************************** WARNING: BOOK SPOILERS AHEAD ******************************************


GREYHAWK ADVENTURES SERIES
The original world-related fiction from TSR, the Greyhawk Adventures series spawned six novels, two by Gary Gygax, and four by Rose Estes. The first two novels detail the life of Gord, a young rogue from the City of Greyhawk.

_Greyhawk Adventures 1: Saga of Old City_, Gygax, Gary. TSR, 1985.
The first novel in the Greyhawk Adventures series details the "origin" of Gord of Greyhawk. It contains excellent detail on the City of Greyhawk itself, as well as additional information about County Urnst, Ratik, the Bandit Kingdoms, Knurl, Theocracy of the Pale and others. Gord meets up with boon companions Chert, Gellor and Curly Greenleaf, and together they venture into the Cairn Hills, where they slay a Catabligone Demon and discover a relic of great importance.

_Greyhawk Adventures 2: Artifact of Evil_, Gygax, Gary. TSR, 1986.
Gord and company destroy a stronghold of the Scarlet Brotherhood, and discover the true meaning of their find in the Cairn Hills. They gather a group of soldiers to their side and attempt to halt evil powers who seek similar artifacts. Should three portions of the artifact be combined, they will create the tripartite artifact of all evil, which is meant to free Tharizdun, a terrible god, from his endless prison.

GORD THE ROGUE SERIES
When Gygax left TSR, he took with him the saga of Gord of Greyhawk. The first books in the series continue the storyline of the tripartite artifact of all evil, with Gord and friends working against various familiar enemies (such as Graz'zt, Iggwilv, Eclavdra and Ombi) and their plans to reunite the sundered portions of the artifact. For whatever reason, Gygax chose to change several character and place names in these books (published under the "New Infinities" label) so that the Iron Hills become the Ferrous Mountains, the Sea of Dust becomes the Ashen Desert and so on.

_Sea of Death_, Gygax, Gary. New Infinities, 1987.
Gord travels to the Ashen Desert to discover the last section of the tripartite artifact of evil. On the way, he falls in love with Leda, a "good" clone of the drow cultist, Eclavdra. The book contains much information on Iuz, Graz'zt, Iggwilv and Zuggtmoy, and the bizarre history that ties them together. A chapter discussing the ecology of the Ashen Desert and the heretofore "undiscovered" countries along its south and western borders is often cited in online  discourse.

_Night Arrant_, Gygax, Gary. New Infinities, 1987.
A collection of short stories chronicling, among other things, the time period between _Saga of Old City_ and _Artifact of Evil_, _Night Arrant_ provides a wide variety of outlooks on Gord's world, and features several intriguing characters and situations. The first story, "The Weird Occurance at Odd Alley," was meant for publication the newly-TSR-owned "Amazing Stories" magazine, though this failed to materialize.

_City of Hawks_, Gygax, Gary. New Infinities, 1987.
This book is a prequel to _Saga of Old City_, and much of its action runs parallel to that novel. Herein, we discover clues to Gord's origin, travel to the Demiplane of Shadow and learn of the Balance, a group of neutral-minded  crusaders for the delicate balance of Oerth's celestial power. 

_Come Endless Darkness_, Gygax, Gary. New Infinities, 1988.
Gord becomes a Champion of the Balance and, with Gellor and Chert, he journeys to the Abyss to rescue Leda, who has taken Eclavdra's position in the clergy of Graz'zt. A great war is fought in the Abyss, and several well-known demons make their first (and final) appearance, here. A hugely-powerful being known as Lord Entropy throws in his lot with the Lords
of Balance, though he is little trusted.

_Dance of Demons_, Gygax, Gary. New Infinities, 1988.
This book concludes the series with major events involving Tharizdun and the Champion of Balance, i.e., Gord. You can read the FAQ for more info but it will be a major spoiler :-)

_Nightwatch_, Bailey, Robin Wayne. TSR Books, 1990. 
Set decades after the "City of Greyhawk" boxed set, this novel captures the feel of Gygax's Greyhawk, while remaining true to the TSR product detailing it ' no mean feat. Garret Starlen, a Night Watch captain, investigates a series of murders that have left all of the Free City's diviners dead. There is a scene featuring Mordenkainen, who seems here to have ascended to
"Quasi-Deity" status, and an oblique nod to Gord the Rogue. The book was released under the "TSR Books" label, was not advertised as a Greyhawk novel, and does not feature the word "Greyhawk" on the front cover.

MISC.
_Starship_, Aldiss, Brian. Avon, 1969 (S.G. Phillips, 1958, 1st print). 
This novel is Gary's inspiration for module S3 Expedition to the Barrier Peaks, complete with 'tween decks, wheely sleds, paralyzer pitsols, welders, plague, the image of vegepygmies, etc.  I used it to create a whole "Before Oerthfall" starship scenario wherein players were the crew of the doomed ship. 

  In an interview with Gary Gygax about several points of Greyhawk minutiae Gary had this to say (Q = Paul Stormberg; A = Gary Gygax):

Q:  "Is the crashed spaceship in S3 Expedition to the Barrier Peaks the Starship Warden from Metamorphosis Alpha?"

A:  "No.  The size and the technology in this vehicle should make such speculation quite misplaced, in fact.  The downed space ship if far too small, and its science quite different from that of the famed starship Warden."

Q:  "In module C1 Hidden Shrine of Tamoachan there is a clue that indicates the crashed spaceship in S3 Expedition to the Barrier Peaks may be the Warden II?"

A:  "The downed spacecraft wasn't really the Warden II either.  Sorry.  That [the obscure clue in module C1 by Harold Johnson and Jeff R. Leason] was somebody else writing, not me.  The crashed space vessel was more like that dealt with in a SF book - whose title and author I have forgotten, but whose mutated inhabitants collected "ponics".  (I think the name of the book was
Starship, but I am not sure.)"

Author's Note:  The book is indeed Starship by Brian W. Aldiss, published in 1959.  It is Aldiss' first novel and was released first in the U.K. as Non-Stop and later in the U.S. as Starship.  The latter title, of course, gives away the best part of the book, one of the likely inspirations for Jim Ward's Metamorphosis Alpha in 1976.