These are letters of Mary Stevenson Hewson to her mother-in-law, sister-in-law, and children, and their letters to her. Of special note are the letters from Thomas Tickell Hewson in London and Edinburgh. There are also letters and papers of William Hewson, including letters from Anthony Fothergill, John Morgan, and Williams Smibert, and letters about Mary Stevenson Hewson's estate. There are many references to Benjamin Franklin, Benjamin Franklin Bache, Jonathan Williams, John Hawkesworth, and others.