Between 1940 and 1953, Fuertes' work began appearing in children's magazines, such as
Pelayos, Chicos, Chicas, Chiquitito; in children's books, such as
Flechas y Pelayos (Maravillas); and in the newspaper
Arriba, which published the comic strip "Coletas and Pelines". Together with Maria Dolores and Adelaida Lasantas, Fuertes founded the group "Verses in Skirts" in 1951. The group organized concerts and poetry readings at bars and local cafes, and collaborated on magazines such as
Directions, Spanish Poetry and
Straw Bird. Between 1950 and 1954, the group worked with Antonio Gala, Julio Mariscal, and Rafael Mir to create and direct the poetry magazine
Archer. From 1955 to 1960, Fuertes studied library science and English at the International Institute. In 1961, she received a
Fulbright scholarship in the United States to teach Spanish literature at
Bucknell University. Later, she taught at
Mary Baldwin University,
Bryn Mawr College, and the International Institute until 1963. In 1972, she received a scholarship from the Juan March Foundation for Children's Literature. In the mid-1970s, she was involved in various children's programs such as
TVE, Siendo Un Globo, Dos Globos, Tres Globos y La Cometa Blanca and
Martes y Trece. ==Literary work==