• 6 College Library
• 6 MERIT Library
• 5 Memorial Library
• 4 Cooperative Children's Book Center (CCBC)

• 14 Books
• 5 Sound Recordings

• 2 Compact Discs

• 16 Hogwarts School of Witchcraft and Wizardry (Imaginary organization)
• 16 Potter, Harry (Fictitious character)
• 16 Schools
• 16 Wizards
• 15 Granger, Hermione (Fictitious character)
• 15 Weasley, Ron (Fictitious character)
• 4 Hogwarts School of Witchcraft and Wizardry (Imaginary place)
• 4 Witches
• 3 Good and evil
• 2 Coming of age
• 1 Bildungsromans
• 1 Boarding schools
• 1 Electronic books
• 1 Fantasy fiction
• 1 Hugo Award

• 8 Rowling, J. K
• 7 GrandPré, Mary
• 5 Dale, Jim
• 4 hoopla digital
• 3 J. K., Rowling
• 1 Astrologo, Marina
• 1 Bartezzaghi, Stefano
• 1 Bartezzaghi, Stefano, editor
• 1 Martín Azofra, Nieves
• 1 Masini, Beatrice
• 1 Muñoz García, Adolfo
• 1 Salani (Firm)

• 13 English
• 2 Italian
• 1 Spanish

• 14 England
• 2 Angleterre

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