Scooby-Doo and the Gruesome Goblin (Scooby-Doo Mysteries)

The Haunted Barn (The Screech Owl Mysteries)

The Smuggler's Secret (Screech Owl Mysteries)

The Candy Bandit (Screech Owl Mysteries)

Scooby-Doo and the Witch Doctor (Scooby-Doo Mysteries)

Scooby-Doo! and the Sinister Sorcerer (Scooby-Doo Mysteries)

The Mystery of the Bad Luck Curse (Mystic Lighthouse Mysteries)

The Blanket Burglar (Screech Owl Mysteries)

Cutter (Gail McCarthy Mysteries)

Roadside Geology of Colorado (Roadside Geology Series)