David Kidd writes: “It’s moving day at America’s first Carnegie library, perched on the side of a hill in Braddock, Pennsylvania. A team of young librarians shuttles in and out with arms full, filling the back of a pickup truck parked just outside. Inside, the bookshelves are bare, with cardboard boxes stacked everywhere. Once the old library has been cleared of its contents, work can begin on a $15 million comprehensive restoration and modernization, scheduled to begin this summer.”