George and the Blue Moon

Usborne Official Astronaut's Handbook

George and the Unbreakable Code

Mini Astronaut's Handbook

D'Aulaires Book of Greek Myths

Astrophysics for Young People in a Hurry

George and the Ship of Time

Knowledge Encyclopedia: The World as You've Never Seen it Before

George's Secret Key to the Universe

Who Was Neil Armstrong?

George and the Big Bang

Knowledge Encyclopedia Space!: The Universe as You've Never Seen it Before

George's Cosmic Treasure Hunt

Doctor Who: Thirteen Doctors 13 Stories

What Was the Hindenburg?

Flying to the Moon: An Astronaut's Story

Middle School: Master of Disaster: (Middle School 12)

Where Is Area 51?

Earth: A Shipmate's Guide to Our Solar System