Columbia subject headings:
Harvard subject headings:
Authors, Spanish--Correspondence.
Pérez Galdós, Benito, 1843-1920. Correspondence
Spanish literature--History and criticism
Princeton subject headings:
Antón del Olmet, Luis.
Borrás, Tomás, 1891-1976.
López Pinillos, José, 1875-1922.
Pérez Galdós, Benito, 1843-1920.
Spanish literature--20th century--History and criticism.