• 22 MERIT Library
• 13 College Library
• 13 Cooperative Children's Book Center (CCBC)
• 12 Memorial Library
• 2 Information School Library
• 1 Special Collections (Memorial Library)

• 7 Sound Recordings

• 33 Magic
• 33 Wizards
• 30 Hogwarts School of Witchcraft and Wizardry (Imaginary organization)
• 26 Potter, Harry (Fictitious character)
• 18 Granger, Hermione (Fictitious character)
• 18 Weasley, Ron (Fictitious character)
• 10 Boarding schools
• 8 Hogwarts School of Witchcraft and Wizardry (Imaginary place)
• 6 Good and evil
• 5 Witches
• 4 Coming of age
• 3 Family life
• 3 Friendship
• 3 Single-parent families
• 2 Breast
• 2 Cancer
• 2 Families
• 2 Fantasy fiction
• 2 Girls
• 2 Immigrants
• 2 Loss
• 2 Loss (Psychology)
• 2 Monsters
• 2 Mothers and sons

• 23 Rowling, J. K
• 14 Rowling, J. K.
• 11 GrandPré, Mary
• 7 Dale, Jim
• 7 J. K., Rowling
• 7 hoopla digital
• 4 Fritz, Klaus
• 2 Blyton, Enid
• 2 Dowd, Siobhan
• 2 Martín Azofra, Nieves
• 2 Muñoz García, Adolfo
• 2 Ness, Patrick, 1971-
• 1 Astrologo, Marina
• 1 Avendaño, Dolores
• 1 Baker, Nicholson
• 1 Balen, Katya
• 1 Bartezzaghi, Stefano, editor
• 1 Bray, Libba
• 1 Butt-Hussain, Ambreen
• 1 Dellepiane Rawson, Alicia
• 1 Digitalia (Firm)
• 1 Fritz, Claus
• 1 Halahmy, Miriam
• 1 Hughes, Arthur, 1832-1915
• 1 Hughes, Thomas, 1822-1896

• 37 English
• 8 Spanish
• 5 German
• 1 Chinese
• 1 French
• 1 Italian

• 1 Hayling Island (England)
• 1 London
• 1 London (England)
• 1 Young adult graphic novels
• 1 Zimbabwe

• 39 Juvenile fiction
• 22 Fantasy fiction
• 7 Juvenile
• 4 Novels
• 3 Children's stories
• 3 Fictional Work
• 3 Young adult fiction
• 2 English fiction
• 2 Fantasy fiction, English
• 2 Fantasy literature
• 2 German language materials
• 2 School fiction
• 2 Translations into German
• 2 Young adult
• 1 Bildungsromans
• 1 Comic books, strips, etc
• 1 Comics (Graphic works)
• 1 Dust jackets (Binding)
• 1 Fantasy
• 1 Fantasy fiction, Juvenile
• 1 Gay comics
• 1 Ghost stories
• 1 Graphic novels
• 1 Humorous fiction

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