A letter from the Rt. Honourable Edmund Burke to His Grace the Duke of Portland, on the conduct of the minority in Parliament : Containing fifty-four articles of impeachment against the Rt. Hon. C.J. Fox. : From the original copy, in the possession of the noble duke. - Burke, Edmund, (London: printed. Philadelphia: re-printed for James Humphreys, no. 74, North Third-Street, the corner of Cherry Alley,, 1797)