Fulltext Sources Online is a directory of periodicals accessible online in full text through more than 28 aggregator products. Published biannually in January and July, FSO lists over 22,000 newspapers, journals, magazines, newsletters, news wires, and transcripts. Each title entry lists the aggregators and their databases carrying the title online in full text, along with dates of coverage. The frequency or lag time for updates of titles appearing online is noted, as well as ISSNs and the publisher's Web site with archives, when available. Subject, geographic, and language indexes are included. Aggregator products in FSO include: DataStar Dialog EBSCOhost Eureka Europresse Factiva FirstSearch FPinfomart GBI Genios HeinOnline InfoTrac InSite Lexis NewsBank Newscan NewsLibrary Nexis NNI (Nikkei) Ovid Pressed (EDD) Profound ProQuest Quicklaw STN Telecom21 Westlaw WilsonWeb FSO subscribers also receive access to the Private Zone, a hyperlinked list of publications with free archives available on the Internet. The Private Zone provides access to full-text back issues of individual publications found in the print edition of FSO.