The Librarians’ Index to the Internet has put together a terrific web resource center for Hurricane Katrina-related information, including information on volunteer opportunities, legal matters, displaced students, charitable giving, animal rescue, missing persons, temporary housing, flood control, levee management, gas prices, environmental factors, news sites, maps and images, and much more. Moreover, LII.org continually updates their webpages, so check back from time-to-time to review the resources added to the Hurricane Katrina webpage.
Man, those librarians sure can organize, eh? ;^)