The eight Orange Island novelizations have been collected as a boxed set with updated covers, titled Pokémon Classic Collection or Pokémon Master Collection (ISBN 9781338193091), which was released on November 1, 2016. Eight Johto Journeys novelizations from Go West, Young Ash to Secrets of the GS Ball have been collected as a boxed set with updated covers, titled Pokémon Adventure Collection (ISBN 9781338284003), which was released on April 1, 2017. They are also available in a 16-book collection known as Pokemon Essential Collection, which was released in December 2016.
The books were the first media to show Gary having a Blastoise, seen in Talent Showdown. However, he was also shown with a Charizard and a Venusaur due to the author not actually knowing which one was his starter.
The novel Race to Danger also states that Pidgeot rejoined Ash after his return from the Orange Archipelago. However, to date, Pidgeot has not made any return appearances in the anime, save for flashbacks and appearances in openings.
At the beginning of most of the books, there are lyrics to various songs used in the series. In the books that show Pokémon Theme, the lyric given is "each Pokémon to understand the power that's inside". However, the actual lyric is "teach Pokémon to understand".