The group received major contributions by different artists from the Spanish avant-garde scene, notably from the writer and diplomat José Luis Castillejo and from the interdisciplinary artist Esther Ferrer.
José Ferrer | David Ferrer | Esther Williams | Miguel Ferrer | Vincent Ferrer | Fernando Ferrer | Dennis Ferrer | Mel Ferrer | Esther Rantzen | Esther Williams (academic) | Esther Lederberg | Esther Ferrer | Esther Cooper Jackson | Bonifaci Ferrer | Adolph and Esther Gottlieb Foundation | Vicente Ferrer | Tony Ferrer | Richard and Esther Shapiro | María Esther Herranz García | Luis Ladaria Ferrer | Lorenzo Serra Ferrer | Horacio Ferrer | Hey, Hey, It's Esther Blueburger#Soundtrack | Hey, Hey, It's Esther Blueburger | Gladys Esther Tormes González | Frank Ferrer | Ferrer Bassa | Esther Vanhomrigh | Esther's Diary (film) | Esther's Diary |
Founder in 1964 of the ZAJ group with Walter Marchetti, Ramón Barce, and later Esther Ferrer and the writer José Luis Castillejo.