TARDIS library

The Doctor's TARDIS contained an extensive library.

It greatly varied in appearance. (COMIC: The Mark of Mandragora, PROSE: The Dimension Riders, TV: Journey to the Centre of the TARDIS)

For a time, the TARDIS control room contained a library, (TV: Doctor Who, COMIC: Endgame, AUDIO: Storm Warning) but even then the Doctor still had a separate library. (PROSE: War of the Daleks, AUDIO: The Man Who Wasn't There)

The Master's TARDIS also contained a library. (PROSE: The Quantum Archangel)

Appearance
At one point, the walls of the library were covered in dark roundeled wood. (AUDIO: The Man Who Wasn't There)

Anji Kapoor thought that the library was "like some sort of optical illusion, with shelves disappearing into the far distance". (PROSE: Escape Velocity)

History
Vicki Pallister used the library to research the United States of America. (PROSE: The Schoolboy's Story)

Adric read every single book on math in the entire library. (AUDIO: Zaltys)

On one occasion, the Sixth Doctor visited the library to check his address book and find the location of Vertipax. (PROSE: The Deal)

Ace once sorted through the library. (AUDIO: Genocide Machine)

Bernice Summerfield once used the library to research the Shovoran dynasty. (PROSE: St Anthony's Fire)

When Anji Kapoor went into the TARDIS for the first time, she glanced into the library and was astounded by its size and messiness. (PROSE: Escape Velocity)

The Eighth Doctor and Charlotte Pollard once successfully sought out Pieter Montmarche: A Diary of Discovery in the library's children's literature section. (AUDIO: The Man Who Wasn't There)

When the Eighth Doctor, Lucie Miller, Susan, and Alex Campbell were attacked by a Blitzen fish during Christmas dinner inside the TARDIS, the library was among the rooms they were chased through. (AUDIO: Relative Dimensions)

When the Eleventh Doctor crashed the TARDIS shortly after his regeneration, the swimming pool fell into the library. (TV: The Eleventh Hour)

While on the run from time zombies, Clara Oswald accidentally found the library and had a look through The History of the Time War. (TV: Journey to the Centre of the TARDIS)

Contents
The library contained Jane's Spaceships (PROSE: War of the Daleks) and Every Gallifreyan Child's Pop-Up Book of Nasty Creatures From Other Dimensions (PROSE: All-Consuming Fire)

The section of the library devoted to children's literature was "ridiculously small". (AUDIO: The Man Who Wasn't There)

Behind the Scenes
The incomplete TV: Lost in the Dark Dimension would have featured the TARDIS library for a significant portion of the story. Set in an alternate timeline where the Fourth Doctor never regenerated and the TARDIS was mostly destroyed; the library would have been the last fragment of the ship remaining, camouflaged as a small church.