Truth Restored is a brief history of the restoration of the gospel of Jesus Christ and the rise of The Church of Jesus Christ of Latter-day Saints “out of darkness and obscurity.” Written by Gordon B. Hinckley, the small book tells of the early growth of the Church, persecutions that followed the Saints, the martyrdom of Joseph and Hyrum Smith, the exodus to Utah, and the progress of the Church in the 20th century. At one time it was part of the Missionary Reference Library.
Originally this book was part of a larger volume, What of the Mormons?, written in 1947 by Gordon B. Hinckley when he was executive secretary to the Church Radio, Publicity, and Mission Literature Committee. He had been asked by then-Church president George Albert Smith to write a book that would introduce the Church to nonmembers.
According to Wikipedia, “The book went through a number of editions in the 1940s and 1950s. In 1976, the LDS Church failed to renew the copyright to What of the Mormons? and it therefore became part of the public domain in the United States. Beginning in 1969, the LDS Church began publishing the historical part of What of the Mormons? under the title Truth Restored.”