Just how old is Professor McGonagall? Has she worked at Hogwarts for thirty-nine years1 or for closer to a century? 2
https://www.librarything.com/work/115 https://www.librarything.com/work/21740108
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Mrs. J. K. Rowling. Harry Potter and the Order of the Phoenix location 4720. © 2003
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Mrs. J. K. Rowling. Fantastic Beasts: The Crimes of Grindelwald Page 137. Text copyright © 2018 Published by Arthur A. Levine Books, an imprint of Scholastic Inc.
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