J.N. Loughborough was present with Ellen White over 50 times as she experienced visions. He traveled extensively with the Whites as they preached the gospel of Jesus and is considered one of the pioneers of the Seventh-day Adventist Church. Having been so intricately involved, Ellen White requested that he write his observations of the pioneering movement. J.N Loughborough wrote, "Having been familiar with the Advent movement from 1843 and 1844, and having, since Jan. 2, 1849, proclaimed the doctrine, first as an Adventist, and since 1852 as a Seventh-day Adventist, I esteem it a pleasure to 'speak the things I have seen and heard'" (The Great Second Advent Movement, preface).
The Great Second Advent Movement is an exhaustive look into the early Advent movement and the rise and progress of the early Seventh-day Adventist Church.