(January 17, 1706 – April 17, 1790) was one a signer of the US Constitution of 1787, Declaration of Independence, and Paris Peace Commission. He was the first US Postmaster General, a major figure in the American Enlightenment and scientist. He facilitated and/or founded many civic organizations, the American Philosophical Society, Union Fire Company, University of Pennsylvania, Philadelphia Contributionship Insurance Company, and the Pennsylvania Society for the Abolition of Slavery.