Google has begun scanning microfilm from some newspapers’ historic archives to make them searchable online, first through Google News and eventually on the papers’ own Web sites, the company said Monday. The new program expands a two-year-old service that allows Google News users to search the archives of some major newspapers and magazines, including The New York Times, The Washington Post and Time, that were already available in digital form.

Readers will be able to search the archives using keywords and view articles as they appeared originally in the print pages of newspapers. Under the expanded program, Google will shoulder the cost of digitizing newspaper archives, much as the company does with its book-scanning project. Google angered some book publishers because it had failed to seek permission to scan books that were protected by copyrights. It will obtain permission from newspaper publishers before scanning their archives.

Google, based in Mountain View, Calif., will place advertisements alongside search results, and share the revenue from those ads with newspaper publishers. Initially, the archives will be available through Google News, but the company plans to give newspapers a way to make their archives available on their own sites.

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