Columbia subject headings:
Salzburg (Austria)--Buildings, structures, etc.
Salzburger Festspiele--Buildings.
Theater architecture--Austria--Salzburg--History.
Harvard subject headings:
Holzbauer, Wilhelm.
Music-halls--Austria--Salzburg.
Salzburger Festspiele--Buildings--History.
Theaters--Austria--Salzburg
Valentiny, Francois, 1953-
Princeton subject headings: