Fallout 2 Official Strategies & Secrets

Fallout 2 Official Strategies & Secrets is the official Fallout 2 strategy guide published by Sybex.

Background
It was written by Matthew J. Norton, one of the two lead designers of Fallout 2. It contains some background information, such as the origin of deathclaws, that was not included in-game. As it was authored by the game's lead designer, the information it provides is considered canon.