This series consists of materials relating to the genealogy and history of Harrison's family. Most of the items in this series are letters sent to Harrison, apparently in response to his queries for information, but there are also some letters that were sent to Harrison's father or other members of Harrison's family. In addition to correspondence, this series also includes a few other documents pertaining to the history and genealogy of Harrison's family, such as: (a) the text of an interview given by Harrison to an alumni magazine in which he recounts his family history; (b) a short biography / obituary of Caroline Dudley Harrison Owsley (1858-1943), written by Edith Ogden Harrison, Harrison's wife; (c) a longer biography of Nathaniel Hart written by Sallie Young Williams; and (d) materials pertaining to the Harrison ancestral homes of Adams House (Kentucky), Berkely (Virginia), Clifton (Virginia), and Shirley (Virginia). Additional information about Harrison's family history collected by the Newberry Library can be found in the accession file.