Buku Audio yang Dikarang by Michael O'Hearn

Tyrannosaurus rex vs. Velociraptor

Dilophosaurus vs. Ankylosaurus

Allosaurus vs. Brachiosaurus

Deinonychus vs. Styracosaurus

Triceratops vs. Stegosaurus

Awesome Space Robots

This or That History Debate

Sea Monsters vs. Dragons

Vampires vs. Werewolves

Ghosts vs. Witches

Henry Ford and the Model T

How Spirit Dog Made the Milky Way

Zombies vs. Mummies