"We are pleased to inform you that the former owners' database of the Ancient Books and Manuscripts Section of the Library of the University of Barcelona is available at:

http://www.bib.ub.edu/fileadmin/posseidors/cerca_eng.htm

The database offers images of the marks as well as information of the previous owners of the copies kept in our Library. The search is available in Catalan, Spanish and English."

Leider ist der Gesamtbestand der Einträge noch sehr gering.