Manuals and Tomes

Manual of Gainful Exercise
+1 Strength
Coffin in catacombs beneath Candlekeep
Manual of Quickness of Action
+1 Dexterity
In Barrel in Thieves Guild in East Baldur's Gate
Manual of Bodily Health
+1 Constitution
In Flesh Golem cave in Seawatcher area
Tome of Clear Thought
+1 Intelligence
In Ramazith's Tower in North Baldur's Gate
Tome of Understanding
+1 Wisdom
In coffin in catacombs beneath Candlekeep, From The Lady's House in West BG (need for subquest); 3rd Floor of Durlag's Tower (TSC)
Tome of Leadership and Influence
+1 Charisma
Xvart cave by Gnoll Stronghold