Carlos Luis Fallas Sibaja (January 21, 1909 – May 7, 1966), was known as Calufa. He was a Costa Rican author and political activist. He was born in Alajuela to a single mother. Fallas only finished the first two years of secondary school. He moved to Limón. There he worked in the banana plantations of the United Fruit Company. Later, he returned to Alajuela at the age of 22 and found work as a shoemaker.

• "Barreteros y otros cuentos" ISBN 978-9977230634
• "Mamita Yunai" ISBN 978-9977239279
• "Marcos Ramírez" ISBN 978-9977232911
• "Mi madrina"
• "Cuenta Braña: un mecánico comunista en la Europa nazi" ISBN 978-9977653334

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