Columbia subject headings:
Harvard subject headings:
Dramatists, Spanish--19th century--Correspondence.
Echegaray, José, 1832-1916--Correspondence.
Guerrero, María--Correspondence.
Theater--Spain--History--19th century.
Princeton subject headings:
Dramatists, Spanish--19th century--Correspondence.
Echegaray, José, 1832-1916--Correspondence.
Guerrero, María--Correspondence.
Theater--Spain--History--19th century.