The British Library Incunabula Short Title Catalogue gives 29,777 separate editions (not copies) as of 8 January 2008, which however includes some print items from the 16th century (retrieved 11 March 2010). According to Bettina Wagner: "Das Second-Life der Wiegendrucke. Die Inkunabelsammlung der Bayerischen Staatsbibliothek", in: Griebel, Rolf; Ceynowa, Klaus (eds.): "Information, Innovation, Inspiration. 450 Jahre Bayerische Staatsbibliothek", K G Saur, München 2008, ISBN978-3-598-11772-5, pp. 207-224 (207f.), the Incunabula Short Title Catalogue lists 28,107 editions published before 1501.