A Comprehensive History of The Church of Jesus Christ of Latter-day Saints: Century I is a six-volume history published in 1930 and written by B.H. Roberts, a general authority and Assistant Church Historian of the Church of Jesus Christ of Latter-day Saints (LDS Church). It should not be confused with the seven-volume History of the Church of Jesus Christ of Latter-day Saints (nicknamed Documentary History of the Church), which was also produced by Roberts in the early 20th-century but as an editor and which focused on the history of Joseph Smith. Source: Wikipedia (en)