Keep on the Borderlands
Gary Gygax
Keep on the Shadowfell
Mike Mearls
Kibbles' Active Martial Feats
KibblesTasty
Kibbles' Compendium of Craft and Creation
Kibbles' Generic Elemental Spells
Kibbles' Martial Progression (Variant Rule)
Kibbles' Occultist
Kibbles' Psion
Kibbles' Warden
KibblesTasty's Warlord (v1.5)
Kidnapped
Tom Prusa
The Kidnapping of Princess Arelina (Dragon Tiles I)
Garry Spiegle
King of the Giantdowns
Ed Stark
Kingdom of Ierendi
Anne Gray McCready & Ken Rolston
Kingdom of Nithia
Blake Mobley & Newton Ewell
Kingdom of the Ghouls: Adventure E2 for 4th Edition Dungeons ...
Bruce R. Cordell & Chris Tulach
Kingdoms & Warfare
Matt Colville & MCDM
Kings Festival
Carl Sargent
The Knight of Newts
Dale 'Slade' Henson
Knights Sword
Collin McComb & Thomas M. Reid
Krenko's Way
Wizards RPG Team
L'Arsene's Crafting Catalogue
Mohammed Bellafquih & Jesse Jackdaw Burns & Max Wartelle
Labyrinth Of Madness
Unknown
The Land Beyond the Magic Mirror
Land of Fate (Al Qadim Campaign Setting)
Lands of Intrigue
Steven E. Schend
Lankhmar City of Adventure (2nd Ed.)
Lathan's Gold
Merle Rasmussen
The Lazy DM's Workbook
Michael Shea
Leaves From the Inn of the Last Home
Margaret Weis & Tracy Hickman
Legacy of Blood
Steve Perrin & Katharine Kerr
Legend of the Hero-Kings
Legends & Lore (1990)
James M. Ward & Troy Denning
Legions of Thyatis
John Nephew
Libris Mortis: The Book of the Undead
Andy Collins & Bruce R. Cordell
A Light In The Belfry
William W. Connors
Live to Tell the Tale: Combat Tactics for Player Characters
Keith Ammann
Living Greyhawk Gazetteer
Erik Mona & Frederick Weining & Gary Holian & Sean Reynolds
Living Kingdoms of Kalamar: Pekal Gazetteer
Daniel S. Donnelly
Locathah Rising
Lord of the Iron Fortress
Andy Collins
Lords of Darkness
Ed Greenwood
Lords of Madness: The Book of Aberrations
Richard Baker & James Jacobs & Steve Winter
The Lost Caverns of Tsjocanth
The Lost Caverns of Tsojcanth (for M.D.G. Wintercon V Tournament ...
The Lost City
Tom Moldvay
The Lost Island of Castanamir
Ken Rolston
The Lost Kenku
Lost Laboratory of Kwalish
The Lost Level
The Lost Shrine of Bundushatur
Michael D. Wagner
Lost Tomb of Martek
Tracy Hickman
Mad Monkey vs Dragon Claw
Jeff Grubb
Maddgoth's Castle
Magic Encyclopedia Vol 1 (1992)
Connie Rae Henson & Dale 'Slade' Henson
The Magic Encyclopedia Volume I
Connie Henson & Dale 'Slade' Henson
The Magic Encyclopedia Volume II
Magic Item Compendium
Eytan Bernstein & Owen K. C. Stephens
Magic of Incarnum
James Wyatt