Columbia subject headings:
Gutenberg, Johann, 1397?-1468.
Printing--History--Celebrations of invention.
Printing--History--Origin and antecedents.
Harvard subject headings:
Gutenberg, Johann, 1397?-1468.
Printing--History--Celebrations of invention
Printing--History--Origin and antecedents
Princeton subject headings:
Gutenberg, Johann, 1397?-1468.
Printing--History.