Through the Looking Glass and What Alice Found There

a novel by Lewis Carroll (Charles Lutwidge Dodgson), the sequel to Alice's Adventures in Wonderland (1865).

It is based on his meeting with another Alice, Alice Raikes.

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.

Though not quite as popular as Wonderland, Through the Looking-Glass includes such celebrated verses as "Jabberwocky" and "The Walrus and the Carpenter", and the episode involving Tweedledum and Tweedledee