I just came across an article with this statement:
This author also states that alchemical references to "sulphur", "mercury", and "other chemical elements" leads one to the search for the Philosopher's Stone [Page 16], which is also known as the Sorcerer's Stone. This latter revelation is exceedingly important, because Rowling's second book was called "Harry Potter and the Sorcerer's Stone". In this book, a quest is begun to discover the Sorcerer's Stone, out of which comes the "Elixir of Life". In Chapter 13 of the Potter book, "Sorcerer's Stone", we learn that Professor Dumbledore -- Headmaster of Hogwart's School of Wizardry and Witchcraft -- had a long term relationship with another sorcerer, Nicolas Flamel, who had perfected the Elixir of Life through the process of Alchemy [Sorcerer's Stone, Page 219]. Thus, Flamel had achieved the Sorcerer's Stone, and is depicted as having original possession of it Then, in the next few paragraphs, we learn that this Sorcerer's Stone possessed by Flamel produced the Elixir of Life, the drinking of which would "make the drinker immortal" [The Sorcerer's Stone , Page 220].
I'm confused. Are there two books dealing with the Sorcerer's Stone?