LONDON - Harry Potter fans owe a debt of gratitude to Alice Newton.
Alice was 8 years old when her father, a Bloomsbury Publishing executive, brought home a new manuscript for her to read.
"The excitement in this book made me feel warm inside," she scrawled in a note to her dad. "I think it is probably one of the best books an 8/9 year old could read."
Based on this glowing review, Bloomsbury published "Harry Potter and the Philosopher's Stone," launching a literary juggernaut that brought magic to a generation of children.
Alice's penciled note is part of the British Library's new exhibition, "Harry Potter: A History of Magic." The show, which coincides with the 20th anniversary of the publication of J.K. Rowling's first book, is an unabashed celebration of the stories and their antecedents.
"There are some rich historical traditions behind the magic in the Harry Potter stories, which J.K. Rowling was aware of," said Alexander Lock, one of the exhibit curators, who added that he was impressed with Rowling's ability to layer information and offer depth. "They go into the stories and make them so rich."
The exhibit, which opens Friday, includes Rowling's outline for the book, her personal drawings of characters and a map of Hogwarts School of Witchcraft and Wizardry.
It also looks at magic and the nature of belief, revealing that many of the things Harry Potter fans thought were imaginary were actually based in fact - or folklore. It includes rare books and manuscripts from around the world, together with cauldrons, broomsticks, crystal balls and potion manuals that offer insight into Rowling's inspiration and how the books came to be.
The show is divided into rooms based on the subjects studied at Hogwarts, the setting for Rowling's novels following the adventures of Harry, the orphan who learns at age 11 that he is a wizard. Sections include Potions, Herbology, Divination, Care of Magical Creatures and Defense Against the Dark Arts.
Each section touches on the legends and beliefs that Rowling wove into her stories, with historical objects illustrating the scholarship behind the narrative.
The exhibition runs from Oct. 20 to Feb. 28, 2018 and has already sold some 30,000 tickets - the highest amount of advance tickets ever sold for a British Library exhibition. It will then travel to New York to celebrate the 20th anniversary of the release of "Harry Potter and the Sorcerer's Stone," the book's title in the United States.