Thomas Jefferson, Nathaniel Francis Cabell, Joseph Carrington Cabell (1856). “Early History of the University of Virginia: As Contained in the Letters of Thomas Jefferson and Joseph C. Cabell, Hitherto Unpublished; with an Appendix, Consisting of Mr. Jefferson's Bill for a Complete System of Education and Other Illustrative Documents; and an Introduction, Comprising a Brief Historical Sketch of the University, and a Biographical Notice of Joseph C. Cabell”, p.366
Benjamin Franklin (1817). “The private correspondence of Benjamin Franklin, LL.D, F.R.S., &c. Minister Plenipontentiary from the United States of America at the court of France, and for the Treaty of Peace and Independence with Great Britain, &c. &c: comprising a series of letters on miscellaneous, literary, and political subjects written between the years 1753 and 1790, illustrating the memoirs of his public and private life, and developing the secret history of his political transactions and negociations”, p.69
Thomas Jefferson (1853). “The writings of Thomas Jefferson: being his autobiography, correspondence, reports, messages, addresses, and other writings, official and private”, p.492