Columbia subject headings:
Theater--Economic aspects--Spain--History--Sources.
Theater--Spain--Madrid--History--Sources.
Harvard subject headings:
Theater architecture--Spain--Madrid--History--17th century--Sources.
Theater architecture--Spain--Madrid--History--18th century--Sources.
Theaters--Spain--Madrid--History--17th century--Sources.
Theaters--Spain--Madrid--History--18th century--Sources.
Theaters--Spain--Madrid--Maintenance and repair--History--17th century--Sources.
Theaters--Spain--Madrid--Maintenance and repair--History--18th century--Sources.
Princeton subject headings:
Theater--Economic aspects--Spain--History--Sources.
Theater--Spain--Madrid--History--Sources.