The Complete Chalion
Lois McMaster Bujold
Anathem
Neal Stephenson
The Location Crafter
Tana Pigeon
Campaign Creation Guide
Johnn Four & Mike Bourke
Odyssey: The Complete Game Master's Guide to Campaign Management
Phil Vecchione & Walt Ciechanowski
Book of Challenges: Dungeon Rooms, Puzzles, and Traps
Daniel Kaufman & Gwendolyn F.M. Kestrel & Mike Selinker & Skip Williams (...)
GameMaster's Campaign Record
David Kenzer & Brian Jelke & Jolly R. Blackburn & Steve Johansson & Jennifer Kenzer & Mark Plemmons (...)
Fantastic Locations: City of Peril
Ed Stark
Drow of the Underdark
Ari Marnell & Anthony Pryor & Robert J. Schwalb & Greg A. Vaughan (...)
Sly Flourish's Fantastic Locations
Michael E. Shea & Brian Patterson & Scott Fitzgerald Gray & Erik Nowak (...)
The Drow Compendium
u/impersonater
The Net Libram of Random Magical Effects v1.20
Orrex
Campaign Journal
Paul Fini
The Well at the World's End: a tale
William Morris
Dragonflight
Anne McCaffrey
Dragonriders of Pern (1)
5 Room Dungeons
Johnn Four
The Compendium of Forgotten Secrets
William Hudson King
GURPS Celtic Myth
Ken Walton & Jo Walton
GURPS (5)
Seafarer's Handbook: Sourcebook of Ships, Oceans, and the Beasts ...
Greg Benage & Kurt Brown & Mark Chance & Lizard & David Lyons & James Maliszewski & Mike Mearls & Brian Patterson (...)
Aenir
Garth Nix
The Seventh Tower (1)