Olgar Shiverstone said:
I haven't counted, but I don't think there are 60.
Here's a list produced by EchoHawk a few days ago. I think there are 59 on that list, but I note that Fiend Folio and Savage Species aren't there, but it's generally around 60. Of course, there are screens and character sheets in there that some may not count.
Dungeon Master's Guide v.3.5
Monster Manual v.3.5
Player's Handbook v.3.5
D&D v.3.5 Accessory Update
Dragonlance Campaign Setting
Miniatures Handbook
Underdark
Book of Exalted Deeds
Draconomicon: The Book of Dragons
Complete Warrior
Deluxe Dungeon Master's Screen
Deluxe Character Sheets
Unearthed Arcana
Player's Guide to Faerûn
Expanded Psionics Handbook
Map Folio I
Complete Divine
Eberron Campaign Setting
Serpent Kingdoms
Planar Handbook
Shadows of the Last War
Races of Stone
Map Folio II
Whispers of the Vampire's Blade
Frostburn: Mastering the Perils of Ice and Snow
Monster Manual III
D&D Basic Game
Shining South
Player's Handbook (Special Edition)
Libris Mortis: The Book of Undead
Sharn: City of Towers
Complete Arcane
Map Folio 3-D
Races of Destiny
Grasp of the Emerald Claw
Complete Adventurer
Lost Empires of Faerûn
Races of the Wild
Sandstorm: Mastering the Perils of Fire and Sand
Races of Eberron
Lords of Madness: The Book of Aberrations
Champions of Ruin
Heroes of Battle
City of Splendors: Waterdeep
Dungeon Master's Guide II
Five Nations
Weapons of Legacy
Deluxe Dungeon Master's Screen (Eberron)
Explorer's Handbook
Stormwrack: Mastering the Perils of Wind and Wave
Deluxe Eberron Character Sheets
Magic of Incarnum
Sons of Gruumsh
Fantastic Locations: Fane of the Drow
Magic of Eberron
Dungeon Master's Guide (Special Edition)
Heroes of Horror
Champions of Valor
Fantastic Locations: Hellspike Prison