online at the National Archives Franklin's petition to Congress for the abolition of slavery s page on the website of the National Archives a 1790 petition that Benjamin Franklin mailed to Congress founders Benjamin Franklin Petitions Congress s page on the website of the National Archives Benjamin Franklin: The Center for Legislative Archives https://www.archives.gov/legislative/features/franklin/ s page on the website of the National Archives On Slavery founders Pennsylvania Society for Promoting the Abolition of Slavery petitioned the U.S. Congress in 1790 to end slavery petitioned for abolition National Archives: Benjamin Franklin Petitions Congress On Slavery Benjamin Franklin Petitions Congress Benjamin Franklin petitioned the U.S. Congress in 1790 to end slavery Benjamin Franklin Petitions Congress late-in-his-career Ben Franklin moment http://www.archives.gov/legislative/features/franklin/