A TARDIS has at least two libraries, each a different size. The TARDIS libraries are sorted by planet, with each room getting its own planet. Within each of these rooms the books are sorted by subject, then planetary region, then year, then quarter years. The larger Library takes up dozens of rooms, and each of these rooms has two shelves, which are a couple of miles long and tall. A brass ladder or spiral staircase provides access to the upper levels.
Most of the "books" are stored in trionic lattice data cubes that are kept in book-shaped cases, but some of the books are capable of reading themselves out loud. A TARDIS uses the Telepathic Circuits and the Architectural Configuration Program to help the crew find the data they are looking for.
The following color code is used:
- Black: For information from the TV Series, including Dimensions in Time, and 1996 TV Movie.
- Blue: For information from the Novels and Audios including Target, Virgin, BCC, and Big Finish.
- Green: For information from 'licensed' reference sources such as the Technical Manual, Doctor Who Magazine, and the Role Playing Games.
- Red: For information from unofficial sources -The Faction Paradox series, behind the scenes interviews, author's speculation, and popular fan belief.
The TARDIS Technical Index is copyright Will B Swift.