Proquest will be performing system maintenance tomorrow (Saturday, February 16, 2008) beginning at 19:00 (7:00PM) for twelve (12) hours (ending at 7 AM, 17 Feb) The following products will be unavailable during this time: ProQuest interface products, ProQuest Historical Newspapers (traditional and graphical K12 interface), American Periodicals Series Third-party databases such as ERIC(r) PlusText ProQuest Archiver(tm) eLibrary(r), SIRS(r), and CultureGrams(tm) Chadwyck-Healey products housed in the US (all products with domain names ending with chadwyck.com) "Digital Vault" products, including ProQuest Dissertations & Theses and Digital Sanborn Maps Please share this information with your colleagues.