Columbia subject headings:
Archiv der Stadt Salzburg--Photograph collections.
City and town life--Austria--History--19th century--Pictorial works.
Frey, Carl von, 1826-1896.
Photography--Austria--Salzburg--History--19th century.
Salzburg (Austria)--History--19th century--Pictorial works.
Harvard subject headings:
Archiv der Stadt Salzburg--Photograph collections.
City and town life--Austria--History--19th century--Pictorial works.
Frey, Carl von, 1826-1896.
Photography--Austria--Salzburg--History--19th century.
Salzburg (Austria)--History--19th century--Pictorial works.
Princeton subject headings: