Columbia subject headings:
Early printed books--19th century.
Illustrated books--Germany--Bibliography.
Illustration of books--Germany.
Photography--Germany--History.
Pictures--Printing.
Harvard subject headings:
Illustrated books--Germany--Bibliography.
Illustration of books--Germany
Photography--Germany--History.
Pictures--Printing
Princeton subject headings:
Books--History--20th century.
Illustrated books--Germany--Bibliography.
Illustration of books--Germany.
Photography--Germany--History.
Pictures--Printing.
Printing--History--19th century.