[2][4] From the 45th issue dated August 1974 Ediciones Amaika became its publisher which was established by Xavier de Echarri, an editor of the magazine, in June 1974.
[2] Carlos Navarro was the sole editor of El Papus which had an anarchist political stance and contained graphic humor which covered nearly seventy percent of its pages.
[2] Notable contributors included Óscar Nebreda, Iva, Ja, L'Avi, Carlos Gimenez, Gin and Ventura & Nieto.
[2] It was warned about the erotic images published in the issue twenty-first dated March 1974 which were regarded as detrimental to the official family concept.
[1][6] The group sent a letter bomb to the office of El Papus in Barcelona which killed one person and injured seventeen people.