Mary Pope Osborne

Magic Tree House 1: Valley of the Dinosaurs

Dinosaurs Before Dark (Full-Color Edition)

Magic Tree House 8: Moon Mission!

Tonight on the Titanic

Eve of the Emperor Penguin

Ancient Greece and the Olympics

Dinosaurs Before Dark (Unabridged)

Magic Tree House: Books 7 and 8: Sunset of the Sabertooth, Midnight on the Moon (Unabridged)

Magic Tree House: Books 1 and 2: Dinosaurs Before Dark, The Knight at Dawn (Unabridged)

Magic Tree House: Books 5 and 6: Night of the Ninjas, Afternoon on the Amazon (Unabridged)

Magic Tree House Collection: Books 17-24 (Unabridged)

Magic Tree House Collection: Books 33-40: Narwhal on a Sunny Night; Late Lunch with Llamas; Camp Time in California; Sunlight on the Snow Leopard; Rhinos at Recess; Time of the Turtle King; & More! (Unabridged)