http://www.loc.gov
2. The British Library
http://www.bl.uk
3. National Library of Australia
http://www.gov.au
4. National Library of France
http://www.bnf.fr
5. National Library of Spain
http://www.bne.es
6. National Library of Canada
http://www.nlc-bnc.ca
7. National Library of Netherlands
http://www.konbib.nl
8. National Library of New Zealand
http://www.govt.nz
9. Portugal National Library
http://www.ibl.pt
10. Denmark Royal Library
http://www.kb.dk