Columbia subject headings:
Broadsides--15th and 16th centuries.
Cologne (Germany)--Imprints.
Incunabula--Bibliography.
Printing--Germany--Cologne--History.
Harvard subject headings:
Broadsides--15th and 16th centuries.
Cologne (Germany)--Imprints.
Incunabula--Bibliography.
Printing--Germany--Cologne--History.
Princeton subject headings:
Broadsides--15th and 16th centuries.
Cologne (Germany)--Imprints.
Incunabula--Bibliography.
Printing--Germany--Cologne--History.