Columbia subject headings:
Machado, Antonio, 1875-1939.
Valderrama, Pilar de.
Harvard subject headings:
Authors, Spanish--20th century--Biography
Machado, Antonio, 1875-1939--Correspondence--Facsimiles.
Machado, Antonio, 1875-1939--Correspondence.
Valderrama, Pilar de--Biography.
Valderrama, Pilar de--Correspondence.
Princeton subject headings: