The sale of surplus stock runs from Monday, July 2 until Saturday, July 7, during their normal opening hours.
There will be fiction, non-fiction and children’s books from a range of genres on offer. There will also be some DVDs available to buy as well.
GLL run the Lincolnshire Library Service in partnership with Lincolnshire County Council.
Karen Waring, for GLL, said: “We’re constantly reviewing our stock to ensure it’s up to date, in good condition and meets the needs of our customers.”