The Anglo-American Cyclopaediaappears in Tlon, Uqbar, Orbis Tertius

The Anglo-American Cyclopaedia is the encyclopedia that the narrator and his friends use to attempt to find Uqbar, but they fail to do so. Later, another friend brings his copy of the encyclopedia that includes the description of Uqbar.

The First Encyclopedia of Tlonappears in Tlon, Uqbar, Orbis Tertius

The First Encyclopedia of Tlon is the book the narrator finds among his friend Herbert Ashe's belongings that brings Tlon to his attention and sends him on the quest to find out everything he can about Tlon.

Don Quixoteappears in Pierre Menard, Author of Don Quixote

Don Quixote is a novel written in the eighteenth century by Miguel de Cervantes.

The Approach to Al-Mu'tasimappears in The Approach to Al-Mu'tasim

The Approach to Al-Mu'tasim is a detective novel discussed in the article The Approach to Al-Mu'tasim.

Circular Ruinsappears in The Circular Ruins