A $100,000 gift from the Allegheny Foundation will help restore the 107-year-old Andrew Carnegie Free Library and Music Hall as the linchpin of economic development in Carnegie, officials said. It increases money the library has raised to more than $5 million toward a goal of $8.6 million. The money is among grants to organizations that the Allegheny Foundation announced Friday to improve the arts, human services, education and economic development in Pennsylvania. "If we can do it, anybody can do it," she said. "We were down and out for the count, and we're working miracles here."