Foilsíodh 'At Swim-Two-Birds', úrscéal le Brian Ó Nualláin, den chéad uair ar 13ú lá de Mhí an Mhárta 1939.
At Swim-Two-Birds, a novel by writer Brian O’Nolan, writing under the pseudonym Flann O’Brien was first published on 13th March 1939. It is widely considered to be O’Brien’s masterpiece, and one of the most sophisticated examples of metafiction.