Sir James W[emyss] Mackenzie, [5th baronet and 8th of Scatwell (1770-1843)], London, to Messrs Spottiswoode Robertson, June 25, 1828, Box: 1, Folder: 59. Spottiswoode & Robertson collection, MS 186. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/248854 Accessed December 12, 2024.