Stephen King and his wife have agreed to pay $3 million to overhaul their century-old hometown library in Maine, as long as $6 million is raised from other sources.

Tabitha King, the author's wife, serves on the building committee of the Bangor Public Library, which is planning a $9 million modernization. She's also a former longtime board member.

One of the library's most pressing needs is a new roof to protect its collection, described as the biggest in northern New England. The library's copper roof was installed in 1912, when the library was built, and library officials say it's beyond repair.

The Bangor Daily News, which first reported the Kings' matching grant, says residents will vote in June whether to borrow $3 million for the roof repair.