LEGO makes a standard librarian minifig. It's a bespectacled woman with a cup marked "Shhh!" and a book. Joe Hardenbrook, AKA Mr. Library Dude, thinks that doesn't adequately cover the range of librarians in the real world. So he created 27 LEGO minifigs that fit common librarian archetypes. You can view the rest at the link.
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