|Born||María Isabel Carvajal Quesada
15 January 1888
San José, Costa Rica
|Died||13 May 1949
Mexico City, Mexico
|Occupation||Writer, communist, Women's Rights Advocate|
Carmen Lyra (1888 – May 13, 1949) was the pseudonym of the first prominent female Costa Rican writer, born Maria Isabel Carvajal Quesada. She was a teacher and founder of the country's first Montessori school. She was a co-founder of the Communist Party of Costa Rica, as well as one of the country's first female worker's unions. She one of the earliest writers to criticise the dominance of the fruit companies.
María Isabel Carvajal Quesada was born on 15 January, 1888 in San José, Costa Rica and attended the Superior School for Girls, graduating in 1904. She began working at the San Juan de Dios Hospital in 1906 as a novice, but decided religious life was not her calling, and instead began working as a teacher and writer. She started sending articles to newspapers such as Diario de Costa Rica, La Hora and La Tribuna; and magazines like Ariel, Athenea and Pandemonium and teaching throughout the country.
In 1918, she pubished her first novel En una silla de ruedas (In a Wheelchair), which portrays national customs and manners through the eyes of a paralyzed boy who grows up to become an artist, with a strong dose of sentimentalism and intimations of the bohemian life of San Jose. In 1919, during a teacher's protest against the dictatorship of Federico Tinoco Granados, Lyra galvanized the crowd and in their anger, they burned the government news office. She managed to escape the police manhunt disguised as a news seller. In 1920, she published her most well-known work Los Cuentos de Mi Tia Panchita (Tales of My Aunt Panchita), a collection of folk tales.
When the dictatorship crumbled, she was given a scholarship to study abroad, at the Sorbonne, in France and also visited schools in Italy and England to evaluate pedagogical methods in use in Europe. She returned in 1921 to manage the Department of Children's Literature at the Normal School of Costa Rica. In 1926, Lyra founded and directed the first Montessori pre-kindergarten, teaching the poorest students of San José. Lyra's home became a gathering place for intellectuals and writers and her politics increasingly moved to to the left. In 1931, she and Manuel Mora Valverde founded the Costa Rican Communist Party. She was joined by fellow teachers María Alfaro de Mata, Odilia Castro Hidalgo, Adela Ferreto, Angela García, Luisa González, Stella Peralta, Emilia Prieto, Lilia Ramos, Esther Silva and Hortensia Zelaya, who had been radicalized at the Normal School (teacher's college), to challenge a society built on privilege and the roles of women being confined to home, marriage, and motherhood. That same year, Lyra and Luisa González formed the Unique Union of Women Workers and suggested the creation of a union for Costa Rican Teachers, which would not be created until 1939 by Odilia Castro.
In 1933, she published Bananos y Hombres (Bananas and Men) anticipating the actual  1934 banana workers' strike, organized by the communist party and in which she played a significant part. As her politics and activities became more radical, Lyra was removed from her teaching posts and in 1948, at the conclusion of the Costa Rican Civil War, when José Figueres Ferrer outlawed the communist party she was sent into exile in Mexico. Despite repeated pleas to be allowed to return home due to illness, Lyra was denied and died in Mexico City on 14 May, 1949.
As of 2010 Carmen Lyra is depicted in the twenty thousand colones bill.
- En una silla de ruedas (1918)
- Cuentos De Mi Tia Panchita (1920) - paperback edition (2000) Editorial Costa Rica, ISBN 9977-23-135-4
- The Subversive Voice of Carmen Lyra: Selected Works, tr. Elizabeth Rosa Horan, University Press of Florida (2000), ISBN 0-8130-1767-X - publisher's details 
- Luisa González and Carlos Luis Sáenz, Carmen Lyra, San José: EUNED (1998) ISBN 9977-64-914-6 – in Spanish
- Daniel Balderston, Encyclopedia of Twentieth-Century Latin American and Caribbean Literature, 1900-2003 (Encyclopedias of Contemporary Culture), Routledge (2004), ISBN 0-415-30687-6
- Carmen Lyra, Revista Comunicación, Instituto Tecnológico de Costa Rica - bio in Spanish
- Banco Central presentó hoy los nuevos billetes - in Spanish
- Beneméritas de la Patria, INAMU, Government of Costa Rica - bio in Spanish
- Jiménez, Diana (2009). Carmen Lyra: A Political Existence. Sara Lawrence College, Yonkers, New York: ProQuest. p. 7. ISBN 978-1-109-18824-0. Retrieved 22 July 2015.
- "María Isabel Carvajal Quesada(Carmen Lyra) h3. 1888-1949". Asociación Nacional de Empleados Públicos y Privados (in Spanish). San José, Costa Rica: Asociación Nacional de Empleados Públicos y Privados. Retrieved 22 July 2015.
- "Carmen Lyra". Editorial Costa Rica (in Spanish). San José, Costa Rica: Editorial Costa Rica. Retrieved 22 July 2015.
- Quesada Villalobos, María Patricia (2009). "En una silla de ruedas o la doble conformación del héroe". Universidad de Costa Rica (in Spanish). San José, Costa Rica: Universidad de Costa Rica. Retrieved 22 July 2015.
- "María Isabel Carvajal Castro, Carmen Lyra" (in Spanish). San José, Costa Rica: Institute Nacional de las Mujeres. Retrieved 22 July 2015.
- "Jiménez (2009)", p 8
- Lavrín, Asunción; Rodríguez Sáenz, Eugenia (2002). Un siglo de luchas, femeninas en América Latina (in Spanish) (1. ed. ed.). San José, Costa Rica: Ed. de la Univ. de Costa Rica. ISBN 978-9-977-67707-1. Retrieved 22 July 2015.
- "María Odilia Castro Hidalgo" (in Spanish). San Jose, Costa Rica: Government of Costa Rica. INAMU. 2006. Retrieved 22 July 2015.
- "Jiménez (2009)", p 25
- Oliver, Myrna (9 June 1990). "Jose Figueres, 82; Former Costa Rican President". Los Angeles, California: The L.A. Times. Retrieved 22 July 2015.
- "Jiménez (2009)", p 9