 He remains the chief organist for the Unseen University, and does not consider an organ complete without a vox diabolica stop, a thunder pedal, and a 256-ft Earthquake pipe.Fortunately, the Johnson organ in the Great Hall of Unseen University is one of the few organs thus equipped.The Librarian is a member of a small elite group of senior Librarians of Time and Space who have the knowledge and ability to travel through L-Space, an extradimensional space that connects all libraries and other large accumulations of books.