The Internet Archive is preserving more than 25 million Web pages relating to Hurricanes Katrina and Rita from some 1,500 news, online journals and other sites.

The pages, recorded Sept. 4 to Oct. 17, include the Web site of The Times-Picayune of New Orleans, which was only able to publish digital editions for several days after Katrina forced the evacuation of its staff.

All of the paper's digital editions are available, including those published before the Archive started making copies of the site.

The Archive also recorded several Web journals, or blogs, including one called "Eye of the Storm."

Other sites recorded include those of relief organizations and government agencies.

The free, searchable index, at http://websearch.archive.org/katrina/, is designed for historians, researchers and the general public.

Web pages come and go, and the Archive attempts to record any public sites it can find, generally every few months.

The San Francisco-based organization records sites more often during major events. It has previously created special collections on the Sept. 11 attacks and presidential elections.

Founded by Brewster Kahle, a pioneer in search technologies, the Archive also preserves movies, audio recordings and books in digital format.