To his Catholic Majesty, Ferdinand the Seventh, King of Spain, etc. etc. etc. in Answer to a Pamphlet, addressed to Mr. Monroe, President of the United States of America, on South American Affairs., 1818, Volume: 45. Lord Eldon Manuscript Collection, MSS-056. Manuscripts. https://aspace.ll.georgetown.edu/public/repositories/3/archival_objects/30391 Accessed April 20, 2025.