In 1773 he contributed editorial essays to the papers about the Patriot cause and also joined the American Philosophical Society. He was active in the Sons of Liberty in Philadelphia during that time. In June of 1776 he was elected to attend the provincial conference to send delegates to the Continental Congress. He was appointed to represent Philadelphia that year and so signed the Declaration of Independence. ADS, signed 'Benjn. Rush,' one page, 6.25 x 4.5, April 6, 1799. Document to the Department of the Jail, written in Rush's hand. In full, 'Please to let the bearer have forty pounds of lath nails for Benjn. Rush.' In fine condition, with scattered light toning and soiling. COA John Reznikoff/University Archives and RRAuction COA.