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The Sorcery Spell Book, by Jackson, Steve
The Speaker in Dreams (Dungeons & Dragons: Adventure) by WYATT (2001-02-06), by
The Spellcaster's Bible, by Unlisted
The Staff of Fanon: In Search of Panaga #1 (Harnmaster), by N. Robin Crossby
The Standing Stone: An Adventure for 7th-Level Characters (Dungeons & Dragons Adventure), by John D. Rateliff
The Star Cairns: First in the Lost Tomb Series (Advanced Dungeons & Dragons: Greyhawk Adventure), by Reynolds, Sean K.
The Star League (Battletech), by Boy F. Peterson Jr.
The Star Trek: The Lost era: 2328-2346: The Art of the Impossible, by DeCandido, Keith R. A.
The Star Wars Intergalactic Passport, by Bjorklund, Charles
The Star Wars Roleplaying Game, by George Strayton, Peter Schweighofer, Bill Smith
The Stars Are Right/2337, by Bishop, Andre,Tynes, John,Watts, Richard
The Stormrider Jump-Start Kit (Ars Magica), by Hotz, Eric, Stevens, Lisa, Rein-Hagen, Mark
The Stuff Dreams Are Made Of (Morpheus), by Craig Sheeley
The Succubus Club, by Andrew Greenberg et al.
The Sunless Citadel (Dungeons & Dragons Adventure, 3rd Edition), by Cordell, Bruce R.
The Techno-Mages Fact Book (Babylon 5 Roleplaying Game), by Bruce Graw
The Temple of Existential Evil, by Glozeris, Paul,Jelke, Brian
The Terrible Revenge of the Simpering Malexineuss The Pretender, by Ed Greenwood
The Thieves of Fortress Badabaskor (Dungeons & Dragons), by
The Thieves of Fortress Badabaskor (Dungeons & Dragons), by Marc Summerlott
The Thing at the Threshold (Call of Cthulhu), by Paul McConnell
The Thing in the Valley OSRIC RPG VG+, by Bill Barsh
The Threshold Monte Cook Games RPG, by Staff