Master Librarian
From Tardis Wiki, the free Doctor Who reference
"Master Librarian" was the title of senior Bookkeepers of the Plume Coteries within the Plume Coteries' Library.
Known Master Librarians included Baligant Caulphin, Roland and Naimon. (PROSE: The Cactus and the Corpse [+]Loading...["The Cactus and the Corpse (short story)"])
