Gesamtkatalog der Wiegendrucke

Der Gesamtkatalog der Wiegendrucke (English: The Union Catalogue of Incunabula (abbreviated as GW or GKW) is an ongoing project of the Berlin State Library and appears in conjunction with the print edition of the union catalogue of incunabula. The Gesamtkatalog serves as a bibliography or collection of cradle prints or incunabula.