Alone in the Dark 1&2
The Official Strategy Guide - Prima's Secrets of the Games

Beavis and Butt-Head in Virtual Stupidity
Bradygames

Broken Sword: Shadow of the Templars
The Complete Solution (Free with PC Power magazine)

Folklore
Bradygames Official Strategy Guide (PS3)

Frankenstein: Through the Eyes of the Monster 
The Official Strategy Guide - Prima's Secrets of the Games (sealed)

Frankenstein: Through the Eyes of the Monster 
The Official Strategy Guide - Prima's Secrets of the Games

In Cold Blood
Prima's Official Strategy Guide

In the 1st Degree
The Official Strategy Guide - Prima's Secrets of the Games

Indiana Jones and the Emperor's Tomb
Prima's Official Strategy Guide

L.A. Noire
Bradygames Signature Series Guide

Laura Bow 2: The Dagger of Amon Ra
Hint Book

Riven - The Sequel to Myst
The Official Strategy Guide - Prima's Secrets of the Games

Riven - The Sequel to Myst
Bradygames Strategy Guides - Official Hints and Solutions

Riven - The Sequel to Myst
Bradygames Strategy Guides - Official Solutions

Myst III: Exile
Prima's Official Strategy Guide

Myst IV: Revelation
Prima Official Game Guide

Myst - Uru Ages Beyond Myst
Prima's Official Travel Guide

Quest for Glory III - Wages of War
Hint Book

Silent Hill
The Official Strategy Guide - Konami

Silent Hill 2
The Official Strategy Guide - Piggyback Authorised Collection

Silent Hill 2
Konami Official Guide (Japan)

Silent Hill 3
Bradygames Official Strategy Guide

Silent Hill 4: The Room
Bradygames Official Strategy Guide

Silent Hill 4: The Room
The Official Guide - Piggyback Authorised Collection

Simon the Sorcerer
The Hint Book - Infocom

Simon the Sorcerer
Hint Book - Adventure Soft

The Suffering: Ties that Bind
Bradygames Official Strategy Guide