“From Benjamin Franklin to William Strahan, 25 October 1755,” Founders Online, National Archives, https://founders.archives.gov/documents/Franklin/01-06-02-0102. [Original source: The Papers of Benjamin Franklin, vol. 6, April 1, 1755, through September 30, 1756, ed. Leonard W. Labaree. New Haven and London: Yale University Press, 1963, p. 232.]