It was a historian's nightmare. During the change from the Clinton to the Bush administration, Web sites affiliated with the Clinton White House went dark, and an unknown number of online documents and files were forever lost.

Such Internet deaths inspired the Cyber Cemetery at the University of North Texas, which preserves government Web sites in their final form. The Cyber Cemetery archives sites when commissions or panels expire, allowing the online work of defunct government bodies to live on and remain accessible to the public.

The virtual graveyard was born in the late 1990s when a group of university librarians noticed that Web sites affiliated with the Clinton administration were disappearing.

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