The Complete Works of Shakespeare was a book that the Doctor tried to carry with him whenever possible.
When the Fourth Doctor and Sarah Jane Smith visited 16th century Kent, the Doctor carried a copy in his breast pocket. It saved his life when a man named Nicholas Skeres stabbed him, thinking him Christopher Marlowe. (PROSE: All Done with Mirrors)
The Dalek Survival Guide presented an image of a Dalek using its sucker arm to take a copy of The Complete Works of Shakespeare. (PROSE: Dalek Survival Guide)