David A. Durfee, William Henry Harrison, John Tyler, United States. President (1841-1845 : Tyler) (1970). “William Henry Harrison, 1773-1841: John Tyler, 1790-1862; chronology, documents, bibliographical aids”, Oceana Pubns
Letter of Archibald Butt to Clara F. Butt on June 01, 1909. "Taft and Roosevelt: The intimate letters of Archie Butt" by Archibald Willingham Butt, 1930.