This series contains various personal files documenting the lives of members of Joseph Parrish Thompson's family. There are several items, including an ambrotype and two manuscripts of articles, which date to Thompson's lifetime. There is also a biography of Thompson written by his son, physician William Gilman Thompson. There are several more items that relate to William Gilman Thompson, including a history of his childhood written by his mother, Joseph P. Thompson's second wife, Elizabeth Coil Thompson. There are several folders of the personal papers and correspondence of Lucy Bartlett Thompson Hunt, who was Joseph P. Thompson's daughter, as well as her husband Seth B. Hunt and their children Lucy and Seth. The correspondence of Seth B. Hunt (Jr.) suggests that this collection was assembled in the 1920s when Theodore D. Bacon, grandson of Leonard Bacon, consulted Hunt while researching the biography of his grandfather.