These gatherings, called "the Saturdays of the Zubiaurres", were attended by some of the most relevant intellectuals and artists of that time, such as Manuel de Falla, José Ortega y Gasset, Diego Rivera and Juan Ramón Jiménez.
She also participated in the founding and development of the Lyceum Club Femenino [es], the first female cultural association in Spain, chaired by María de Maeztu.
In fact, she held the position of director of the Lyceum's Literature Section from 1928 until 1932, organizing public presentations by Spanish and foreign intellectuals.
During the Spanish Civil War, Zubiaurre and her husband followed the democratic Republican Government to Valencia, where they stayed in the Casa de la Cultura (The Culture House) with other leftist intellectuals.
On her way to exile, Zubiaurre decided to spend nine days in New York, where, accompanied by Zenobia Camprubí and Juan Ramón Jiménez, she visited several sites of interest such as the Hispanic Society of America and Columbia University.
The letters written during the Spanish Civil War show the leftist intellectuals' efforts to promote their political ideas against the Francoist forces, as well as the difficulties of daily life.