In October 1777, he joined the [[Continental Congress]] at York, Pennsylvania, and, in 1778, wrote the patriotic and successful pamphlet called ''Observations on the American Revolution'', which he published at the beginning of 1779. | In October 1777, he joined the [[Continental Congress]] at York, Pennsylvania, and, in 1778, wrote the patriotic and successful pamphlet called ''Observations on the American Revolution'', which he published at the beginning of 1779. |