Letter from Lord Palmerston [Henry John Temple, third Viscount Palmerston], March 29, 1841 (Foreign Office), Box: 23, Folder: 6. Letters, literary manuscripts, and personal papers of the Porter family, MS 28. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/467123 Accessed September 16, 2024.