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
James C. Humes, Benjamin Franklin (1995). “The wit and wisdom of Benjamin Franklin: a treasury of more than 900 quotations and anecdotes”, Harpercollins
Benjamin Franklin (1836). “The Works of Benjamin Franklin; Containing Several Political and Historical Tracts Not Included in Any Former Edition, and Many Letters, Official and Private, Not Hitherto Published; with Notes and a Life of the Author”, p.2