Worldbookdealers.com - "Top antiquarian booksellers have come together under one banner to present over 200,000 expertly catalogued books." Provides "search engine, a wide selection of participating dealers' stock, dealer profiles, highlights of latest activities, acquisitions and catalogues, general news items and notices of events."
EncycloZine - Describing itself as a hybrid of a portal and a "concise encyclopedia," Encyclozine features encyclopedia-like entries to over 100 topics and quality links to related sites.
Operabase - site hosts a database of 500 opera houses and festivals, searchable by keyword or browseable alphabetically (with numerous display options) or via clickable maps.
Public Domain Music - A reference site to help the ordinary person identify public domain songs and public domain music . . . royalty free music you can use anywhere and any way you choose.
109 - Provided by chemsoc, the chemistry societies network, this new site offers an attractive and informative visual interpretation of the periodic table.
NOAA National Oceanographic Data Center - The U.S. National Oceanographic Data Center (NODC) holds the world's largest collection of publicly available oceanographic data.
