Harmony, Pennsylvania, is an important historical site of The Church of Jesus Christ of Latter-day Saints on the Susquehanna River in northeastern Pennsylvania. Significant events occurred there during the periodic residence of the Prophet Joseph Smith from 1825 to 1830. Harmony was the home of Isaac Hale, father of Joseph Smith's wife, Emma Hale. Joseph Smith and his father boarded with Isaac Hale in 1825 while working on Josiah Stowell's mining project. In December 1827, Joseph and Emma moved to Harmony from Manchester, New York, to work on the translation of the plates of the Book of Mormon.