in the 1930s, in connection with the centennial of the Mormon Church, a movement started to better locate, preserve, and mark the old trail. One of the first organizations to do so was the Utah Pioneer and Landmarks Association. The Daughters of Utah Pioneers and the Sons of Utah Pioneers have also erected hundreds of trail markers. The Mormon Pioneer Trail Foundation does much research on the old trail. And several federal agencies, including the National Park Service and Bureau of Land Management, state, and local organizations and individuals have done much to locate, foster, preserve, and mark the trail. The Historic Sites Committee of the Mormon Church works to the same end.
Source: Historic Resource Study - Mormon Pioneer National By Stanley B. Kimball, Ph.D., May 1991. (The study focuses on the history of the trail from its official beginning in Nauvoo, Illinois, to its terminus in Salt Lake City, Utah, during the period 1846-1869. During that time, thousands of Mormon emigrants used many trails and trail variants to reach Utah. This study emphasizes the 'Pioneer Route' or 'Brigham Young Route' of 1846-1847. The sections on Mormon beliefs and motivations for going west have been omitted. Interested persons can find ample sources for that information. The footnotes, bibliography, maps, pictures, pioneer companies by name and dates for the 22-year period, and historic sites - about 2/3 of the book - have also been left out for space considerations. Thanks to Dr. Kimball and the National Park Service for the availability of this information.)