Thomas S. and Margaret Williamson's 1½-story log cabin was completed near this location in December, 1836. One of the first two rooms also served as a church and school until 1841. Missionaries Stephen and Mary Riggs lived in one of the upstairs rooms from their arrival in 1837 until 1843. The hearthstone, originally under the Williamson's stove, was relocated to a Dakota mission in Nebraska in the 1880s, before being returned to the site more recently.