Columbia subject headings:
Printing--History--16th century.
Printing--History--Origin and antecedents.
Printing--Specimens.
Harvard subject headings:
Printing--History--16th century.
Printing--History--Origin and antecedents
Printing--Specimens
Princeton subject headings:
Printing--History--16th century.
Printing--History--Origin and antecedents.
Printing--Specimens.