Dear ProQuest Customer,

ProQuest® will be performing infrastructure maintenance on 12 February, 2011. A twelve (12) hour maintenance window will be required for this maintenance. The window will take place from Saturday, 12 February, 2011, at 22:00 EST to Sunday, 13 February, 2011 at 10:00 EST. See below for a more complete list of times and time zones.

The following products will be unavailable during these windows:

All products appearing on the new ProQuest platform such as ProQuest Historical Newspapers, ProQuest Central, Illustrata: Natural Sciences, Sociological Abstracts, and British Periodicals.

**PLEASE NOTE** This does not impact ProQuest databases appearing on the "legacy" ProQuest platforms including ProQuest, Illumina and Chadwyck-Healey. If your institution has not completed the migration to the new platform, your access to the legacy platforms will remain uninterrupted.

If you are unsure, please visit www.proquest.com/go/legacyplatforms to see which version of the platform you are using.

Maintenance window schedule, by time zone:

• Eastern Standard Time: Saturday, 12 February, 2011 at 22:00 for twelve (12) hours
• Greenwich Mean Time: Sunday, 13 February, 2011 at 03:00 for twelve (12) hours
• Central European Time: Sunday, 13 February, 2011 at 04:00 for twelve (12) hours
• Japan/Korea Standard Time: Sunday, 13 February, 2011 at 12:00 pm for twelve (12) hours
• Malaysia/China Standard Time: Sunday, 13 February, 2011, at 11:00 for twelve (12) hours
• Australia Eastern Daylight Time: Sunday, 13 February, 2011, at 14:00 pm for twelve (12) hours
• Brazil Standard Time: Sunday, 13 February, 2011 at 01:00 for twelve (12) hours
• New Zealand Daylight Time: Sunday, 13 February, 2011 at 16:00 for twelve (12) hours

We welcome customer feedback. Please email your comments to platform feedback or visit www.proquest.com/go/suggestions.

Thank you for continuing to support ProQuest and the products we provide.