Letters of Britannicus to the editor of the Morning post, on Mr. Grattan's bill for the relief of the Roman Catholics of Great Britain and Ireland; or, as it should have been entitled, for the advancement of popery. To which is added, an appendix, containing the Petition from the General Assembly of the Church of Scotland., 1813, Volume: 46. Lord Eldon Manuscript Collection, MSS-056. Manuscripts. https://aspace.ll.georgetown.edu/public/repositories/3/archival_objects/30404 Accessed April 20, 2025.