Lambda Literary Awards (also known as the "Lammys") are awarded yearly by the United States-based Lambda Literary Foundation to published works that celebrate or explore LGBT (lesbian, gay, bisexual, transgender) themes. To qualify, a book must have been published in the United States in the year current to the official year of the award; the presentation ceremony is held a year later. The Lambda Literary Foundation states that its mission is "to celebrate LGBT literature and provide resources for writers, readers, booksellers, publishers, and librarians - the whole literary community."