Related information on the web

• www.antikvariat.net, a search engine for the Scandinavian antiquarian booksellers.
• Gutenberg Homepage, about Gutenberg.
• ILAB International League of Antiquarian Booksellers
• The Royal Library (Kungliga biblioteket) in Stockholm.
• Swedish prints before 1700 (in Swedish)
• Octavo: Digital Rare Books, a company that publishes old books on CD.
• RBMS Bibliographic Standards Committee Resources for the Rare Materials Cataloger, information on most things related to "rare books and hand writings". Catalogue rules, Latin printing town names, and more.
• Roman Numerals, description of Roman numerals and more.