Columbia subject headings:
Gutenberg, Johann, 1397?-1468.
Incunabula--Specimens.
Printing--History--Origin and antecedents.
Type and type-founding--History.
Harvard subject headings:
Gutenberg, Johan, 1397?-1468.
Gutenberg, Johann, 1397?-1468.
Gútenberg, Johann.
Incunabula--Specimen pages.
Printing--History--Invention.
Type-founding--History.
Princeton subject headings: