Thud!: Discworld #30
Going Postal: Discworld #29
The Truth: Discworld #25
Making Money: Discworld #36
Unseen Academicals: Discworld #32
Night Watch: Discworld #27
Snuff
Thief of Time: Discworld, Book 26
The Fifth Elephant: Discworld #24
Raising Steam: The Discworld Series, Book 40