Library Card Mug. Coffee Mug with Library Card with Day Due Stamps, Bookish Gift, Literature Mug, Librarian Gift, Bibliophile Gift, Bookworm, Book Lover Gift, Literary Mug, Book Lover Mug. Library card design with due day stamps printed on a white 11oz. coffee mug. This Library Card themed coffee mug would make a great gift for any book and coffee lover! Product Details: -11 oz. white ceramic mug -Dishwasher & Microwave safe