When was "Treasure Island" by Robert Louis Stevenson first published?

Treasure Island is an adventure novel by Scottish author Robert Louis Stevenson, narrating a tale of "buccaneers and buried gold". First published as a book on May 23, 1883, it was originally serialized in the children's magazine Young Folks between 1881–82 under the title Treasure Island or, the mutiny of the Hispaniola with Stevenson adopting the pseudonym Captain George North.