Twenty Years! Celebrating Signature Books and Its Contribution to Mormon Studies Signature Books celebrates twenty years of publishing books, sometimes groundbreaking, sometimes controversial, often-times both. With works including Mormon theology, LDS history, humor, fiction, social critiques, music, personal essays, and other topics, the Signature Books publishing library has become impressive indeed. Come reflect with founders, employees, and friends on the important contribution Signature Books has made to the world of Mormonism.