Harry Potter Trading Card Game these expansions include the addition of the "Quidditch" lesson type and "Match" cards introduced in the "Quidditch Cup" expansion, location cards introduced in the "Diagon Alley" expansion, and a larger pool of adventure cards in the "Adventures at Hogwarts" expansion. The fourth and final expansion released was "Chamber of Secrets", which has 140 cards plus 55 Foil or Hologram Portrait Premium rares (October 2002). This last expansion features cards based on the "Chamber of Secrets" book, where all previous cards were based on the "Sorcerer's Stone" book. From its conception in 2001 through 2003, the "Harry Potter Trading Card Game"
The Harry Potter Lexicon appropriates too much of Rowling's creative work for its purposes as a reference guide." In December, 2008, a modified (and shorter) version of Vander Ark's Lexicon was approved for publication and was released January 16, 2009 as "The Lexicon: An Unauthorized Guide to Harry Potter Fiction". The Harry Potter Lexicon The Harry Potter Lexicon is a fan-created online encyclopedia of the "Harry Potter" series. The site was created by school librarian Steve Vander Ark. It contains detailed information for all seven published "Harry Potter" books. The Lexicon lists characters, places, creatures, spells, potions and magical devices, as well as analyzing