The Euskaltzaindia Assembly began in Arantzazu to approve the Euskara batua. In it, gathered until October 5, supported by the report of Koldo Mitxelena, they promoted linguistic unity, based on the central Basque country, with the aim of overcoming problems of understanding and regulating the language. Gabriel Aresti, Txillardegi, Luis Villasante and Koldo Mitxelena are the main drivers of the unified Basque Country.

The image includes Imanol Berriatua, Manuel Lekuona, Antonio María Labaien, Jose Antonio Arkotxa Martixa, Julita Berrojalbiz, Koldo Mitxelena, Joxe Luis Zurututza, Karmelo Etxenagusia, Andoni Sarastxegi,