George's Secret Key to the Universe
Frank Einstein #6: and the Space-Time Zipper
Frank Einstein #1: and the Antimatter Motor
Explorer Academy #7: The Forbidden Island
Explorer Academy #6: The Dragon's Blood
Izzy Newton and the S.M.A.R.T. Squad #2: Newton's Flaw
Izzy Newton and the S.M.A.R.T. Squad #3: The Law of Cavities
Explorer Academy #5: The Tiger's Nest
Explorer Academy: #3 The Double Helix
Explorer Academy #4: The Star Dunes
George's Secret Key #6: George and the Ship of Time
Izzy Newton and the S.M.A.R.T. Squad #1: Absolute Hero
