Donors to the new presidential library probably will remain a mystery, according to the nonprofit foundation overseeing its fundraising.

"It's our decision not to disclose who the donors are," said Mark Langdale, president of the George W. Bush Presidential Library Foundation, citing some donors' preference to remain anonymous.

The foundation, which will oversee construction of the library, museum and public policy institute at the Southern Methodist University campus in Dallas, had raised less than $3 million when the latest tax reports were filed in August.

That's far short of its $300 million goal, but foundation officials say the fundraising will pick up significantly after Bush leaves office Jan. 20.

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