Antonio Pérez, another second generation exile, soon joined the publishing house’s work and opened it to literature and the arts. As well as suggesting a title name inspired by Valle Inclán that would serve so perfectly, Pérez provided contacts with Saura, Tàpies and Millares who gave the publishing house a memorable image. Pérez also directed the poetry collection.

Many individuals and groups identified with Ruedo ibérico and collaborated with the intellectual project or provided material support. Juan Goytisolo closely backed it and provided numerous texts, particularly for the magazine. Ruedo ibérico was also joined by those expelled from the PCE in 1964, Jorge Semprún and Fernando Claudín, as well as prominent members of the Popular Liberation Front (Frente de Liberación Popular, FLP), particularly the journalist Luciano Rincón and many young students studying in Paris, such as Ignacio Quintana, Manuel Castells, Joaquín Leguina, Pasqual Maragall, Narcís Serra, José Luis Leal and José Ramón Recalde. Later on, further additions to Ruedo included Alfonso Colodrón, Juan Martínez Alier and José Manuel Naredo who went on to run the publishing house in its last era. In terms of ideology, Ruedo ibérico’s collaborators formed a map of a varied heterodox left-wing that encompassed a Republican antifrancoist opposition alongside an internationalist standpoint of an anti-capitalist nature; as well as, during the sixties, an anti-establishment stance of a libertarian nature. Francisco Carrasquer was a witness from the start and accomplice in the conversion of José Martínez to the libertarian pseudonym of Felipe Orero during the publishing house’s final era.

Other distinguished collaborators included the erudite Herbert R. Southworth, the main bastion in the struggle against censorship, and Isaac Díaz-Pardo, without whose collaboration it would have been impossible to publish Galicia Hoy (Galicia Today), Míguez’s works and the three last volumes of Ruedo ibérico: two volumes of the Romancero de la Guerra and the Crónicas sarracinas by Juan Goytisolo.

Alongside these intellectual collaborators, it is impossible to forget those who worked for the publishing house in its different eras: José Simoes, Juan Manuel Arencibia, Horts Westphal, Denyse Vaillancourt, Alejo Luiansí and above all Marianne Brüll, a privileged witness who still keeps the memory of Ruedo ibérico alive.