Columbia subject headings:
Book industries and trade.
Illustration of books.
Photomechanical processes.
Printing--Specimens.
Harvard subject headings:
Graphic arts--Germany--History--19th century.
Graphic arts--Germany--History--20th century.
Graphic arts--Specimens.
Illustration of books--Technique.
Photomechanical processes.
Printing--Specimens
Princeton subject headings:
Book industries and trade.
Illustration of books.
Photomechanical processes.
Printing--Specimens.