Howdy Adder,
Thanks much! Sorry, I missed this post the first time it came around. I appreciate the thanks.
My contribution was to find every obscure place on the face of the WoG that I thought should be on a map. I submitted a huge list to the GreyTalk fan list and Kij Johnson as part of the "Stump the Greyhawk Team" thread in 1998. There was mighty talk of a huge master poster map of Greyhawk for
DM's. I researched like crazy and then, nothing.
Then, 6 years later, out of the blue Erik contacted me and asked if I still had the list.

Not all of the places on my list appear on the map (even some that should have) but quite a few do. I was not the only contributor. Indeed I feel my role is pretty small. Thanks to Erik for the credit and the initiative to get the maps done. Finally!
Here is the last list I posted on GreyTalk, there was another later one emailed to Kij Johnson but I can't find it:
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From December 1998 GreyTalk Archives:
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Howdy Greyhawk Team,
G-Team, Here is the next round of my "Stump the Greyhawk Team" places.
At 01:38
PM 11/3/98 -0700, you wrote:
>Here is the challenge: try to come up with a Greyhawk reference that
>we've missed to a city, town, dungeon, hill, moutain range, river,
>fortress, crypt, fjord, pass, or any other item of interest that should
>be on a Greyhawk map.
*(Note, I have completely and utterly Ignored WG10, WG7, and anything Estes.)
*(Final note, I have not covered novels, Dungeon adventures, WG7-8, WG10
WGA1-4, WGM1, WGR1-6, WGS1-2, FtA, and CoG.)
BAYS
Big Seal Bay DRAG57
Arrowhead Bay
R4Dunhead Bay Dra57
BRIDGES
Empyreal Bridge
R4Critwall Bridge Greyhawk Wars
CASTLES
seven Castles of Rulership
R4Hydell
R4Keep of Alderweg UK2-3
Castle Mukos S2
Restenford Castle (ruins) L1
Torkeep WG6
Castle Hart Castles Boxed Set
Slaver's Stockade A2
Moathouse (ruins)
T1Castle Blackmoor GA
CLIFFS
Burning Cliffs GA
CONTINENTS
Aquaria R1-4
COUNTRIES/STATES
Berghof (Duchy) UK2-3
Warfields, Wormhall, Freehold, etc. (any surviving Bandit Kingdoms?) Dra63
Nedla Greyhawk Wars
Oberulsprulheim
GDQ1-7Prinzfeld WGQ1
Kingdom Where None Has Stood WGQ1
Barony of Ulek WGQ1
Rhizia WoG83
Esmerin (a valley) GA
DUNGEONS
Great Pit
R4Caves of Northending
R4Porpherio's Garden UK1
Quasqueton
B1 (1st print)
FORESTS
Dark Woods
R4Black Forest
R4Charwood Forest
R4Thelwood (erroneously Thelly Forest in Greyhawk Wars) Dra57
Kelman Woods L1
The Dead Forest L1
Spring Glade L1
Dweomer Forest L1
Reddy Forest L1
Argo Forest L1
Rogan Forest L2
Lookout Forest L2
Forest Gesex L2
HILLS
Growing Hills
R4Kelman Hills L1
Bone Hill L1
Green Knoll L1
Gesex Hill L2
Dead Gnoll's Eyesocket S2
ISLANDS
Lendore Isle L1-2
Doc's Island
R4Syberate UK1
numerous small unamed islands
R4Isles of Woe DMG1
Asperd Isle GA
Sinking Isle GA
Turucambi (archipelago?) GA
LAKES
Onion Lake
R4Lake Spendlowe UK3
Lake Farmin L2
Udrukankar GA
MEADOWS
Emridy Meadow WoG83,
T1-4MINES
Azak-Zil (Pureheart) GA
MOUNTAINS
Snurre's Hall (Volcano)
G1-3White Plume Mountain (Geothermal Geyser Cone) S2
Flamenblutt (Volcano) A3-4
unnamed range I1
several unamed mountain ranges
R4The Great Peaks
R4Northending Moutain
R4Kamph Mountains UK2-3
Xerbal Mountains L1
Lookout Peak L2
Farmin Mountains L2
Gargoyle Peak WG9
Peaks of Haven WGQ1
Iggwilv's Horn
S1-4Tostehnca (Skrellingshald) GA
PASSES
Kendeen (Harsh) Pass WoG83
Rockegg Pass Dra57
Kelten Pass Dra57
Bluefang-Kelten Pass Dra57
Riddling's Pass WGQ1
Fair Passage
R4several unamed passes
R4The Pass of Alderweg UK2-3
The Pass (pass into Gargoyle Valley) L2
Thunder Pass Greyhawk Wars
Celene Pass Greyhawk Wars
Bramblewood Gap Greyhawk Wars
Ebenharfe gap WGQ1
PLAINS
Plains of Iuz
S1-4POINTS/PENNINSULAS
Norland Point Dra57
the Tusk Dra57
Densac Peninsula Greyhawk Wars
Thillonrian Peninsula WoG83
RIVERS
Imeryds Run
T1-4River Dunwater U2
Dank Brook U3
Black Drain U3
Greencourse River
R4Ruling River
R4several unamed rivers
R4River Gann UK2-3
River Lewyn UK3
Kaye River Dra57
Svarjet (subterranean) D1-3
Pitchy Flow (subterranean) D1-3
Restin River (East and West) L1
Farmin River L2
River of Blood S2
River of the Lost (subterranean)
S1-4ROADS
High Road
T1-4Low Road
T1-4Greatroads
R4several unamed roads and trails
R4main road through the Bramblewood WoG83
track/road between Orlane, Hochoch, and Hookhill N1
Prince's Road WGQ1
SEAS
Telfic Gulf WoG83
Sea of Yar WoG83
Gulf of Yar WoG83
SPRINGS
Spring of Ehlonna WG12
SWAMPS
Great Swamp S2
TOWNS, SETTLEMENTS, CITIES, ETC.
Garythane
R4Burle U2
Seaton U2
Ostverk
T1-4Nulb
T1-4Sobanwych
T1-4Northending
R4Restenford L1-2
Saltmarsh U1-3
Garrotten L1-2
Rockburgh-on-the-Marsh WG9
Shell
R4Felonius
R4Endril
R4Fairway
R4Neang Kazar
R4Nimbortan
R4Newford
R4Hillbrook
R4numerous small unamed towns
R4Suderham (ruins?) A3-4
Bankspret (renamed Empyrea)
R4Ferd
T1-4Syber UK1
Gannaway UK2
Kusnir UK2
Hallbridges UK3
Chiswell UK3
Catbut (misspelling of Calbut) Dra57
Ustula Dra57
Killdeer Dra57
Galdol Dra57
Newkeep Dra57
Dekspoint Dra57
Dingaverge Dra56
Erelhei-Cinlu (subterranean) D1-3
Orlane N1
Mitrick (misspelling of Mitrik) Greyhawk Wars
Attstad Greyhawk Wars
Thrutch (or Thrunch) WG6
Croodle (elven?) D1-3,
G1-3Nithe (gnomish)
D1-2village in Hepmonoland A1-4
Drone A1-4
Turiss A1-4
Rittersmarche WGQ1
Brenfluss WGQ1
Oakenburgh WGQ1
Township of Riddling's Pass WGQ1
Reichsvale (valley?) WGQ1
numerous unnamed elf villages WG12
Moonhollow WG12
Vinestrong WG12
Woodsdeep WG12
Fernwalk WG12
Petalrich WG12
Earthwood WG12
Vagabond WG12
Earthwood WG12
Little Bissel WG12
Ebonwood WG12
Badgertown WG12
Darkglade WG12
Rock Path WG12
Roothome WG12
Barkburg WG12
Burrowville WG12
Mossburg WG12
Scamp WG12
Snaffle WG12
Kardz WG12
Plunder WG12
Tambor WG12
Swindle WG12
Danz WG12
Fortune WG12
Seer WG12
Mooch WG12
Hornwood
S1-4Thornwood S4
Zarak GA
Azak-Zil (Pureheart) GA
Tostehnca (Skrellingshald) GA
VALLEYS
Greenway Valley
T1-4Shadow Valley
R4Gargoyle Valley WG9
Spring Valley L1
Gnome Vale WG4
Reichsvale (village?) WGQ1
Craggy Dells
S1-4, S4
Valley of Death GA
Rigdruok (Rainbow Vale) GA
Esmerin (a country also) GA
MISCELLANEOUS
Pinnacles of Azor'Alq GA
Csipros Erd (Geysers of Death) GA
Tovag Baragu (Navel of the Oerth) GA
Futures Bright,
Paul