Collection contains various items related to Pratt's missionary service and letters with his wives and other family. Includes a handwritten diary of Pratt and his wife, Phoebe Sopher Pratt, kept while the Pratts were on a mission for The Church of Jesus Christ of Latter-day Saints in South America from 1851 to 1852. Also included are three handwritten letters and eight fragments of manuscripts by Parley P. Pratt. All items date from 1851 to 1855.

Handwritten copy of a fragment of a letter from Parley P. Pratt's wife, Phoebe, to he family. The letter describes her preparations to leave with Parley on his mission and tells of her marriage to Parley and their flight from Nauvoo, Illinois. 2 pages. Date of production not identified, but likely early 1851.