evidence: Benjamin Franklin (1838). "The Works of Benjamin Franklin: Containing Several Political and Historical Tracts Not Included in Any Former Ed., and Many Letters Official and Private, Not Hitherto Published; with Notes and a Life of the Author", p.48 Benjamin Franklin (1844). "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.573