I owe the discovery of Uqbar to the concurrence of a mirror and an encyclopaedia. The mirror unsettled the far end of a corridor in a villa in Gaona Street, in the Buenos Aires suburb of Ramos Mejía; the encyclopaedia, fraudulently entitled The Anglo-American Cyclopaedia (New York, 1917), is an exact, if belated, reprint of the 1902 edition of the Encyclopædia Britannica.