Through the Looking-Glass.

Through the Looking-Glass, (1871) is a novel by Lewis Carroll (Charles Lutwidge Dodgson), the sequel to Alice's Adventures in Wonderland (1865). Set some six months later than the earlier book, Alice again enters a fantastical world, this time by climbing through a mirror into the world that she can see beyond it. Through the Looking-Glass includes such celebrated verses as "Jabberwocky" and "The Walrus and the Carpenter", and the episode involving Tweedledum and Tweedledee.