Tennessee's public libraries will soon be able to share books cheaper and faster thanks to a new interlibrary loan service. The Secretary of State’s office says the Tennessee State Library and Archives has been paying about 200 thousand dollars annually to help libraries mail books to each other. But that amount only covered about half of the postage costs. With the new Firefly Courier service, a courier will drive to each of the state's 177 public libraries twice weekly. The state will pay about the same amount, but there will be no cost to the local libraries. The loan program will also expand to link public libraries with those at colleges and universities. The nonprofit Tenn-Share helped develop the service.