Harry Potter Hardcover Box Set (Books 1-4)
Arthur A. Levine, November, 2001.

Ultimate Unofficial Guide to the Mysteries of Harry Potter
Wizarding World Press, January, 2003.

Harry Potter and the Goblet of Fire (Book 4 Audio CD)
Bantam Books-Audio, 08 July, 2000.

Harry Potter and the Prisoner of Azkaban (Book 3 Audio CD)
Bantam Books-Audio, 01 February, 2000.

Harry Potter Schoolbooks Box Set: Two Classic Books from the Library of Hogwarts School of Witchcraft and Wizardry
Scholastic Trade, November, 2001.

The Sorcerer's Companion: A Guide to the Magical World of Harry Potter
Broadway Books, 18 September, 2001.

Harry Potter and the Sorcerer's Stone (Book 1 Audio CD)
Bantam Books-Audio, December, 1999.

Harry Potter and the Chamber of Secrets (Book 2 Audio CD)
Bantam Books-Audio, December, 1999.

Harry Potter's Muggles' Guide to Magic
David B. Mouwse, 15 March, 2001.