"Following his conversion to The Church of Jesus Christ of Latter-Day Saints in 1830, Parley P. Pratt became the new religion’s first prolific writer and theologian. His biographers stated it this way, "By 1851...he [Parley] had become, after Joseph Smith and Brigham Young, the most influential figure in shaping early Mormon history, culture, and theology."
Parley P. Pratt, The Apostle of Mormonism. Terryl L. Givens & Matthew J. Grow, 2011 (Emphasis Added)
From his pen came: